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This package was debianized by Peter S Galbraith <psg@debian.org> on
Mon, 26 Mar 2001 14:46:05 -0500.
There is no upstream tar file. These files were downloaded and included in
this tar file:
ftp://harmonics.unh.edu/xtide/offsets-2003-10-08.xml.gz
ftp://harmonics.unh.edu/xtide/harmonics-2004-02-03.txt.gz
The upstream harmonics file (listed above) was striped of data for Japan
and the Netherlands which have restrictions on commercial use. This was
done using a script included in the xtide-data source package:
$ zcat harmonics-2004-02-03.txt.gz | perl debian/harmonics-strip-nonfree.pl
Upstream Maintainer: Bob Kenney <rmk@unh.edu>
Copyright:
********* NOT FOR NAVIGATION ********
*** DO NOT RELY ON THIS DATA FILE FOR DECISIONS THAT CAN RESULT IN ***
*** HARM TO ANYONE OR ANYTHING. ***
This data file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Agencies like NOAA exist because there is a need for certifiably
correct tide predictions. Please don't rely on this data if you need
guaranteed results. There is NO WAY I can get certified data on a
zero budget. I rely on users like you to tell me when something is
wrong. Please continue to do so.
WHOSOEVER CHOOSES TO REDISTRIBUTE THIS DATA ASSUMES ALL LIABILITY
ASSOCIATED THEREWITH. NEITHER FLATERCO, INC., NOR DAVID FLATER
PERSONALLY, SHALL BE LIABLE FOR ANY LOSSES THAT THE REDISTRIBUTOR
MIGHT SUFFER AS A CONSEQUENCE OF ANY CLAIMS THAT ARE MADE TO THIS
DATA.
Permissions on data
-------------------
Data published by the U.S. government is by law non-proprietary.
After a complaint from the U.K. Hydrographic Office, and the
subsequent discovery that country-by-country permissions are now
required to use harmonic constants from outside the U.S., the
distributions of data that spanned many countries (all of the data
originating with the International Hydrographic Office or the Table
des Mares des Grands Ports du Monde) were removed. I no longer
accept data without a statement from the authority either granting
permission for non-commercial use with XTide or explaining that such
permission is not required. The old data may be reinstated
piecemeal if the relevant permissions are documented.
The following regional collections of data are still included. It is
my understanding that any necessary permissions to distribute them for
non-commercial use with XTide were received by the contributors of
that data. However, if some authority raises an objection, I will
immediately delete any affected data without argument.
Note: Ed Wallner is the author of the TIDES4 shareware for MS-DOS.
Australia and environs: most Australian data came from the Royal
Australian Navy Hydrographic Service in 1994, before the
privatization of the Australian tide authority. It was provided to
Ed Wallner via A. F. Marston with a disclaimer but no explicit
restrictions. Tasmania, Papua New Guinea, Solomon Islands, and a
few Antarctica places were included. A smattering of similar
locations were contributed by Robert Chalmers in 1997 from unknown
sources, and one data set for Sydney was derived from raw
observations that were sent by David Gorham of the New South Wales
government.
Canada: all Canadian constants date to before the privatization of
the Canadian tide authority. Before privatization, it was widely
shared and arrived to me through at least two different channels.
Near the time of privatization (1997), a newer distribution was
forwarded to Ed Wallner by an employee of the tide service but with
uncertain permissions on distribution. That newer data is not
included here. In 2000-04 an attempt was made to contact the
employee by email and by physical mail to clarify the status of the
new data. Both went unanswered.
Faroe Islands: Thormann Kruse pieced together a distribution of data
for the Faroe Islands from published sources and local experts, none
of which trace to the IHO or the TMGPM. Attempts to follow up and
establish explicit permissions bounced on 2001-02-16 and again on
2001-02-21.
Greenland: was included in the Canadian data, so presumably there is
no separate issue.
Iceland: Bjarni Valsson forwarded data from Sjmlingar slands
(a.k.a. the Icelandic Hydrographic Service). No restrictions were
mentioned. An attempt to follow up and establish explicit
permissions was sent 2001-02-16; no response as of 2001-02-21.
Japan: Toru Suzuki obtained approval from the Maritime Safety Agency
to use Pub. 742 data with XTide, even though such approval is only
stipulated for commercial applications.
Mexico: the remaining data for Mexico came mostly from the Anales
del Instituto de Geofsica, which showed no restrictions on its use.
Some actually came from NOAA, while some came originally from
unknown or unrecognized sources.
Miscellaneous islands are included in the distributions from NOAA.
Netherlands: the Netherlands data was contributed directly by Koos
Doekes of the Rijkswaterstaat RIKZ/ITB, 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.
New Zealand: all New Zealand data was contributed to Ed Wallner in
1994 by the Royal New Zealand Navy Hydrographic Office. It was
provided with a disclaimer but no explicit restrictions.
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