File: harmonics_boilerplate.txt

package info (click to toggle)
xtide-data-nonfree 20100529-1
  • links: PTS
  • area: non-free
  • in suites: bookworm, bullseye, buster, jessie, jessie-kfreebsd, sid, squeeze, stretch, wheezy
  • size: 588 kB
  • sloc: sh: 36; makefile: 25
file content (598 lines) | stat: -rw-r--r-- 24,367 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
# $Id: harmonics_boilerplate.txt 3664 2010-05-29 23:24:11Z flaterco $
#
# Definitions and constants for XTide
#
# NOTE:  This file should not be used as-is to provide a constituent
# set to harmgen because it contains multiple constituents with the
# same frequency.  A better constituent set is included in the harmgen
# distribution (see the README).
#
#
# ********* NOT FOR NAVIGATION ********
#
# *** DO NOT RELY ON THIS DATA FILE FOR DECISIONS THAT CAN RESULT IN ***
# ***                   HARM TO ANYONE OR ANYTHING.                  ***
#
# Highly trustworthy tide predictions cannot be achieved on a zero
# budget.  If you need guaranteed results, don't use these data!
# Contact the tide authority for your region (NOAA in the U.S.).
#
# This data file is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without any warranty that its use will NOT
# INFRINGE ANY RIGHTS, and without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# WHOEVER CHOOSES TO REDISTRIBUTE THESE DATA ASSUMES ALL LIABILITY
# ASSOCIATED THEREWITH.  NEITHER DAVID FLATER NOR ANYONE ELSE INVOLVED
# SHALL BE LIABLE PERSONALLY OR OTHERWISE FOR ANY LOSSES THAT THE
# REDISTRIBUTOR MIGHT SUFFER AS A CONSEQUENCE OF ANY CLAIMS, BOGUS OR
# OTHERWISE, THAT ARE MADE TO THESE DATA.
#
#
# --- Notes to contributors ---
#
# After getting legal threats from the U.K. Hydrographic Office, I am
# no longer willing to accept any data without an explicit statement
# from the copyright owner or eminent authority either granting
# permission for non-commercial use with XTide or explaining that such
# permission is not required.  The absence of a copyright notice is
# not sufficient; however, a blanket permission for non-commercial use
# is sufficient.
#
# For more technical reasons, I am not prepared to accept data under
# conditions that require me to track uses of the data, to limit the
# uses of the data to a particular time period, or to verify that
# every user has read the legalese.  XTide has many different
# interfaces by which users can obtain results, and such requirements
# are impossible to implement in a reasonable and consistent fashion
# across all interfaces.  For a reasonable compromise, see what was
# done for the POL data:  a reference to legalese is included in the
# location name field.
#
#
# --- Copyright statements ---
#
# United States:  Data published by the U.S. government is by law
# non-proprietary.  Stations in the U.S., territories of the U.S.,
# commonwealths associated with the U.S., and countries with a Compact
# of Free Association with the U.S. have been included.  A few other
# stations available from the NOS web site have been dropped.
#
#   Notice available on the NOS web site at
#   http://tidesandcurrents.noaa.gov/disclaimers.html as of
#   2007-05-30:
#
#   The information on government servers are in the public domain,
#   unless specifically annotated otherwise, and may be used freely by
#   the public. Before using information obtained from this server,
#   special attention should be given to the date and time of the data
#   and products being displayed. This information shall not be
#   modified in content and then presented as official government
#   material.
#
#   The user assumes the entire risk related to its use of these
#   data. NOS is providing these data "as is," and NOS disclaims any
#   and all warranties, whether express or implied, including (without
#   limitation) any implied warranties of merchantability or fitness
#   for a particular purpose. In no event will NOS be liable to you or
#   to any third party for any direct, indirect, incidental,
#   consequential, special or exemplary damages or lost profit
#   resulting from any use or misuse of this data.
#
#   NOS requests that attribution be given whenever NOS material is
#   reproduced and re-disseminated. Pursuant to 17 U.S.C. 403, third
#   parties producing copyrighted (compilation) works consisting
#   predominantly of material created by Federal Government employees
#   are encouraged to provide notice with such work(s) identifying the
#   U.S. Government material incorporated and stating that such
#   material is not subject to copyright protection.
#
# Canada:  The harmonic constants used to perform tide predictions for
# locations in Canada are derived from sea level data made available
# by Marine Environmental Data Services, Fisheries and Oceans Canada,
# for public, non-commercial use.  The predictions are not the same as
# those computed by the Canadian Hydrographic Service, which uses its
# own sets of harmonic constants.
#
#   Copyright notice for the sea level data at
#   http://www.dfo-mpo.gc.ca/notices-avis-eng.htm (rev. 2009-07-17):
#
#   Non-Commercial Reproduction
#
#   Information on this site, other than government symbols, has been posted
#   with the intent that it be readily available for personal and public
#   non-commercial use and may be reproduced, in part or in whole and by any
#   means, without charge or further permission from Fisheries and Oceans
#   Canada, provided that:
#
#   * due diligence is exercised in ensuring the accuracy of the information
#     reproduced;
#   * Fisheries and Oceans Canada is identified as the source department; and
#   * the reproduction is not represented as an official version of the
#     information reproduced, nor as having been made in affiliation with, or
#     with the endorsement of, Fisheries and Oceans Canada.
#
# Netherlands:  The Netherlands data was contributed directly by Koos
# Doekes of the Rijkswaterstaat RIKZ/ZDI, who grants permission by his
# own authority:
#
#         Herewith I grant permission for non-commercial use
#         of all harmonic constants for the Netherlands by
#         users of Xtide or Xtide-based products.
#
#         This covers the use of the constants for Dutch
#         ports in the Xtide-database by designers
#         of web applications, and the use in commercial
#         tidal prediction software in which the constants 
#         themselves are not stored - i.e. the user has
#         to copy them from the Xtide-database himself.
#
#         It does NOT cover the use in commercial software
#         in which the constants are incorporated, which is
#         considered commercial use of the constants here.
#         Any request for permission of use of Dutch constants
#         in software of this kind should be redirected to
#         RIKZ.
#
# Germany:  The Germany data was contributed directly by Wolfgang
# Lange of the Bundesamt fuer Seeschifffahrt und Hydrographie (BSH),
# who grants permission by his own authority:
#
#         As long as you make your software using these tidal data
#         freely available, I grant permission for non-commercial use
#         of the harmonic constants for the 12 reference stations at
#         the german North Sea coast on the same conditions and rules
#         layed down in the letter from Koos Doekes, RIKZ/ZDI,
#         concerning the Netherlands harmonic constituents.
#
# UK:  Received 2003-11-15 DWF.  See also http://www.flaterco.com/pol.html.
#
#                                         Proudman Oceanographic Laboratory
#                                         Natural Environment Research Council
#
#                                         Bidston Observatory
#                                         Bidston Hill
#                                         Prenton
#                                         Merseyside
#                                         CH43 7RA
#                                         United Kingdom
# David Flater
# 13320 Country Ridge Drive               Tel +44 (0) 151 653 8633
# Germantown, MD  20874                   Fax +44 (0) 151 653 6269
# United States of America                www.pol.ac.uk
#
#
#                                         07 November 2003
#
# Dear David,
#
# This letter is to confirm that we are happy for you to download the
# sea level data from the British Oceanographic Data Centre website and
# use this in the generation of harmonic constants using the HarmGen
# software.  However there are a couple of things that we would politely
# ask that you do.
#
# 1.  Limit the number of harmonic constants you use in the software to
# a maximum of 40 for any port.  This should easily be enough to create
# very accurate tidal predictions as for nearly all locations, any
# harmonics left out (i.e. the 41st most significant constants onwards)
# will have amplitudes of the order of a centimetre.
#
# 2.  State that the data is derived from sea level data obtained from
# the British Oceanographic Data Centre based at the Proudman
# Oceanographic Laboratory, Liverpool.
#
# 3.  Make it clear that the predictions however are not the same as
# those computed by the Proudman Oceanographic Laboratory which uses its
# own sets of harmonic constants.
#
# 4.  Continue to make your software using the data freely available.
# Please inform us if you intend to produce a software product that you
# will be making a charge for.
#
# I hope these conditions are acceptable to you and it will be good to
# see the UK back on the map.
#
# Yours sincerely,
# Colin Bell
# Head of Applications Group
#
#
# Changelog
# ---------
#
# 2010-05-29
#
# Mark Randolph checked the rest of California and found one other station
# that broke after December 2008 in the same manner as Santa Cruz:  General
# Fish Company Pier, Moss Landing, California.  Fixed that and thanks again
# to Mr. Randolph.
#
#
# 2010-05-22
#
# Santa Cruz, Monterey Bay, California now has the same problem as Albany and
# Coyote Point Marina (supposedly UTC data were LST).  It broke between
# December 2008 and December 2009.  Thanks to Mark Randolph for reporting the
# problem.
#
#
# 2009-12-27
#
# Due to significant, uncorrectable differences with authoritative
# predictions, the data for Germany were retired.
#
# Imported NOS data from snapshot 2009-12-22.
#
# Removed the current reference station Akutan Pass which no longer matches
# published tables (maximum velocities have decreased).
#
# Reapplied the meridian fixes for Albany and Coyote Point Marina.  The
# discrepancy for Albany versus the tide tables is now being reproduced by
# the new NOAA tide predictor.
#
# The LST harmonic constants for Johnston Atoll and Kwajalein changed
# meridians this year.  XTide does not use the LST constants, but there might
# be some impact on agreement with NOAA predictions for the subordinate
# stations that use those reference stations.
#
#
# 2008-12-28
#
# Imported NOS data from snapshot 2008-12-01.
#
# Reapplied the meridian fixes for Albany and Coyote Point Marina.
# Corrected latitude of Monte Carlo Island, AK.
# Fixed spelling of Monterey and Chapoquoit.
#
# In light of the continued absence of harmonic constants for currents on
# the NOS web site, I have reinstated 32 reference stations from CURCON00.US
# that still match NOS' published 2009 predictions, together with applicable
# subordinate stations from the 2008-12-01 web scrape.  As always, there is
# plenty of opportunity for improvement in the station names.  States were
# determined heuristically and some will be wrong.
#
# The database now includes a state field that provides the 2-letter USPS
# abbreviation for the state in which each tide station is located, when
# applicable.
#
# All TCD files and dumps are now being distributed in tarballs together
# with the boilerplate.
#
#
# 2007-12-28
#
# Imported NOS data from snapshot 2007-12-17.
#
# Reapplied the meridian fixes for Albany and Coyote Point Marina.
# Coordinates of I-526 bridge were fixed upstream.
#
# A comparison of all reference stations versus the 2008 tide tables
# published on the web revealed discrepancies for Anchorage, AK and Port
# O'Connor, TX.  The Anchorage discrepancies are small enough to be
# explained by a data update; however, the Port O'Connor discrepancies are
# major and are not helped by the meridian fix that worked for Albany and
# Coyote Point Marina.  Local observations are required to determine whether
# the Port O'Connor predictions are any good at all.  This is complicated by
# the fact that it is a diurnal station with small tidal range, making
# eyewitness confirmation that much more unreliable.  Subordinate stations
# depending on these reference stations will also fail to match the
# published tables.
#
#
# 2007-11-22
#
# To facilitate compliance with Linux distribution packaging policies
# and to draw more attention to the acceptable use restriction on
# non-U.S. data, the "free" and "nonfree" data are now being exported
# to separate TCD files.  At this time, all "free" data are public
# domain and all "nonfree" data are merely restricted to
# non-commercial use only.
#
# Replaced the data set for Harwich, England with one calculated from
# a longer time series.  Proudman still does not yet publish
# predictions for this location.
#
#
# 2007-03-18
#
# Updated approximated MLLW datums with improved estimates.
#
# Put IGNORE HEIGHTS in the legalese fields of the 14 subordinate
# stations where NOS zeroed out the heights.
#
#
# 2007-02-22
#
# Applied renamings as updated and improved by Walt Bilofsky (thanks
# Walt).
#
#
# 2007-02-11
#
# Interim release, without renamings.
#
# Imported NOS data from snapshot 2007-02-07.
#
# (9414449) Coyote Point Marina, San Francisco Bay, CA:  corrected meridian.
#           (Data claimed UTC, was UTC-8)
# (8518995) Albany, Hudson River, NY:  corrected meridian.
#           (Data claimed UTC, was UTC-5)
# I-526 bridge, Ashley River, South Carolina:  fixed longitude.
# Pascagoula, Mississippi Sound, Mississippi latitude was fixed upstream.
#
# In progress:  renamings.
#
# Since there were two reference stations with incorrect meridians
# (one that was reported last time and one that was just discovered),
# it is reasonable to expect that there will be more.
#
#
# 2006-07-08
#
# Coyote Point Marina, San Francisco Bay, California:  corrected meridian.
# Delaware City, Delaware River, Delweare:  fixed typo in name.
# Pascagoula, Mississippi Sound, Mississippi:  fixed latitude.
# I-526 bridge, Ashley River, South Carolina:  fixed longitude.
#
#
# 2006-03-05
#
# Installed renamings from AH for the 102 stations that lacked states.
#
#
# 2006-02-05
#
# Refreshed U.S. data from NOS web site (snapshot 2006-01-04).  AH has
# dealt with new and modified station names to maintain the naming
# convention installed 2005-11-27.  Still to be fixed is a list of
# stations that do not include their state in their name.  Most or all
# of those have been that way since November.  They didn't stick out
# much until an unrelated Harmbase query happened to group them
# together.
#
# An e-mail exchange with Todd Ehret of NOS CO-OPS this time led me to
# believe that the UTC constants for the Alaskan reference stations
# with weird time zones should be correct, so I have retained them.  A
# survey of affected subordinate stations shows that most should be
# correct if their reference station is correct (they all use the same
# one).  Most doubtful are the six subordinate stations on
# St. Lawrence Island.  I do not even have reliable intelligence on
# what the de facto time zone of St. Lawrence Island is.  It was not
# mentioned in the statute that defines U.S. time zones.
#
#
# 2005-11-27
#
# Installed renamings from August Hahn to achieve something like the
# naming convention previously followed in legacy data.  These
# renamings will be maintained through subsequent updates if the churn
# is not too bad.
#
#
# 2005-09-05
#
# Generated and installed harmonic constants for 49 Canadian stations
# using up to 10 years of hourly data (the maximum permitted download)
# from Marine Environmental Data Services (MEDS), Fisheries and Oceans
# Canada.
#
# MEDS publishes water level data for 962 stations.  Of those, only 92
# are currently active.  Of those 92, 43 are non-tidal, being located
# on or near the great lakes.
# 
#
# 2005-06-05
#
# Generated and installed fresh harmonic constants for U.K. stations
# using all available data for the 19 year epoch from 1986 to 2004.
# Quality assurance information is available at
# ftp://ftp.flaterco.com/xtide/harmonics-dwf-2005-06-05-QA.txt
#
# Station Harwich, England is new with only 8 months of data.
# Authoritative predictions for this station are not yet available for
# comparison.
#
#
# 2005-01-20
#
# Deleted the following Alaskan reference stations, which were
# rendered incorrect by technical difficulties confirmed by Todd Ehret
# of NOS CO-OPS, and all dependent sub stations.  They may return
# corrected in future revisions.
#
#  - 9460150 Attu, Massacre Bay
#  - 9465261 Clarks Point, Nushagak Bay              
#  - 9468132 St. Michael, Norton Sound
#  - 9497649 Prudhoe Bay #2
#  - 9497778 Cross Island
#
# Also deleted the following station which is listed as superseded.
#
#  - 9497652 Prudhoe Bay, Dock #1     
#
#
# 2004-12-10
#
# Refreshed all NOS data from NOS web site.
#
#
# 2004-10-18
#
# No data changes -- just resyncing and renaming all the different
# editions of the database.
#   harmonics-dwf-2004-10-18-v2.tcd   Built with libtcd 2.0
#   harmonics-dwf-2004-10-18-v1.tcd   Built with libtcd 1.100
#   harmonics-dwf-2004-10-18.sql      Postgres 7.4.2
#   harmonics-dwf-2004-10-18-dump     txt/xml restored from -v2.tcd
#   harmonics-dwf-2004-10-18-compat   txt/xml years 1970-2037 only
#
#
# 2004-10-08 DWF
#
# Updated RIKZ/MII references to new name, RIKZ/ZDI.
#
#
# 2004-10-05 DWF
#
# Rebuilt using libtcd 1.99, which corrects a problem where
# constituents with zero phases were being dropped.  The affected
# reference stations are Delfzijl, Netherlands; The Battery, New York
# Harbor, NY; and South Pass, LA.
#
#
# 2004-09-14 DWF
#
# Imported subordinate stations available from the NOS web site as of
# 2004-09-09.  Compare against
# http://co-ops.nos.noaa.gov/tide_pred.html.  Some stations will
# disagree moderately because the reference stations were updated and
# don't match the published tables.
#
# The smattering of sub stations in non-U.S. territory was suppressed.
#
# There are time zone problems in Alaska.  The LST used by the NOS for
# stations in Alaska does not always match the local statutory time
# zone (which I have followed).  For reference stations, the problem
# was detectable and correctable because the constants were available
# calibrated with UTC as well as LST.  But for the sub stations, it is
# impossible to tell whether a disagreement with NOS predictions
# results from a disagreement about time zone, incorrect calibration,
# or both.
#
# A few names suffixed by (A) and (B) reflect sub stations on the NOS
# web site with the same names and close coordinates, where it is far
# from obvious why there are two of them.  Other name clashes were
# resolved by disambiguation.
#
# (Nit) Corrected months_on_station for German ref stations from 13 to
# 12.  (It's a time zone / rounding issue, on list to be fixed.)
#
#
# 2004-09-07c DWF
#
# Put the following three stations on Eastern time (they were calibrated
# to Central time on the NOS web site):
#   Johns Island, Chassahowitzka Bay, FL
#   Chassahowitzka River, FL
#   Crystal River, Kings Bay, FL
#
#
# 2004-09-07b DWF
#
# Corrected heuristic for Alaskan time zones.  A few stations in the
# Aleutians were affected.
#
#
# 2004-09-07 DWF
#
# Added notes for stations in Alaska where the LST used by NOS does not
# match the apparent statutory time zone.  Presently these notes just
# get attached to the comments field in the TCD file, but the next major
# revision to the TCD format should enable XTide to display them more
# prominently.
#
#
# 2004-09-01 DWF
#
# Most reference stations available from the NOS web site as of
# 2004-08-26 have been imported.  Compare against
# http://co-ops.nos.noaa.gov/tide_pred.html.
#
# MLLW benchmarks were not available for all stations.  For stations
# where a MLLW datum was not available, the datum has been set to LAT.
#
# I know there are typos in the location names.
#
# Currents are not available at this time.  According to Mr. Ehret, they
# will become available when the new CO-OPS currents database is
# complete.
#
# The following stations, which are located in jurisdictions that are
# neither territories of the U.S., nor commonwealths associated with the
# U.S., nor countries with a Compact of Free Association with the U.S.,
# have been dropped.  Their data are distributed without legalese from
# the NOS web site; however, that does not necessarily mean that anyone
# other than the NOS has permission from the respective governments to
# use or redistribute the data.  This may seem paranoid, but the
# situation with the U.K. data that were pulled in 2001 was very
# similar.
#
#   Apia, Samoa
#   Bermuda Esso Pier, St. Georges Island, Bermuda
#   Fare Ute Point, Papeete Harbor, French Polynesia
#   La Unin, El Salvador
#   Madero, Tampico Harbor, Tamaulipas, Mexico
#   Puerto Corinto, Nicaragua
#   Puerto Corts, Honduras
#   Puerto Quetzal (San Jose), Guatemala
#   Settlement Point, Grand Bahama I., Bahamas
#   Suva Harbor, Suva, Fiji
#
#
# 2004-08-19 DWF
#
# This is an interim release as I am starting over from scratch using
# Harmbase2.  All legacy data have been dumped.
#
# All U.S. data are temporarily down; the 2004-08-09 version of this
# file remains usable for those.  Mr. Ehret has indicated that there
# would be fees involved in obtaining harmonic constants and offsets
# in the format previously received, so I am abandoning all that and
# gearing up to scrape data off of the web.  According to Mr. Ehret,
# the set of locations on the web site is a superset of those used in
# published prediction tables.  The discrepancies that occur are
# because the harmonic constants on the web are updated continuously
# while the harmonic constants used for the published tables are fixed
# in advance.  Thus there seems little to be lost by replacing all of
# the legacy data with a snapshot of the web data.
#
# Data presently included:
#
# Netherlands reference stations computed from hourly levels 1999
# through 2002, as received from Koos Doekes on 2004-02-03.  Compare
# against http://www.getij.nl/engels/.
#
# German reference stations computed using Harmgen from year 2001
# observations sent by Wolfgang Lange on 2004-08-19.  The datums are
# adjusted to LAT.  Compare against
# http://www.bsh.de/en/Marine%20data/Forecasts/Tides/index.jsp.  (The
# web site is still using the MLWS datum, so the heights will disagree
# strongly until the web site is updated.  However, even adjusting for
# that, the agreement is not as good as could be hoped.  The BSH
# predictions are made using a non-harmonic method, so some
# discrepancies are inevitable.)
#
# German subordinate stations as sent by Wolfgang Lange on 2004-08-10.
#
# U.K. reference stations computed using Harmgen from at least four
# years of observations ending 2002-12-31, as downloaded from the BODC
# web site 2003-11.  Compare against http://www.pol.ac.uk/ntslf/tides/.
#
#
# 2004-08-09 DWF
#
# harmonics-dwf is a new database that emphasizes responsiveness to
# updates and traceability to authoritative sources instead of maximum
# coverage of locations and historical predictions.  All data known to
# be old and expired and all data for which no source of updates
# exists have been purged.  This will orphan many users who have been
# getting good results from old data.  For these, please continue to
# use RMK's database.
#
# harmonics-dwf now contains:
#   - U.S. reference stations provided by Todd Ehret of NOAA circa
#     2004-02-04.
#   - Netherlands reference stations provided by Koos Doekes of the
#     Rijkswaterstaat RIKZ/ZDI (then RIKZ/MII) on 2004-02-03.
#   - U.K. reference stations derived by Harmgen from BODC data,
#     2003-11.
#   - The most recent data for other U.S. reference stations that
#     were in RMK data rev. 2004-04-16 23:30 but not included in
#     the distribution from Todd Ehret.
#
# All sub stations are gone temporarily while I update my software to
# import the sub station data sent by Todd Ehret in February.  I will
# also be contacting Mr. Ehret to see if I can obtain a complete dump
# of all stations in current use so that I can build a legacy-free
# database.