P14N bathymetry data 
Updated 3/20/02 LDT

ASCII navigation and bathymetry data file was obtained from 
Frank Delahoyde from ODF on 10/27/98.
Depths are apparently corrected, but do not agree with the
NGDC depths.
P14N - last station at 15.981 deg S
       port stop at 18.703 deg S 

Expocode: 325023_1 and  325024_1
Chief Scientist: Gunnar Roden
Ship:  R/V T. Thompson
Ports: Leg 1: Dutch Harbor, Alaska to Tarawa
       Leg 2: Tarawa to Suva, Fiji
Dates: 1993.JUL.05 - 1993.AUG.11   Leg 1
       1993.AUG.14 - 1993.SEP.01   Leg 2

"p14n.nav" is the original data from ODF

"p14n_edited.nav" is the original data from ODF

"P14N_bathy_gdc.dat" is p14n.nav reformatted to standard format.  

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Format specifications for P14N:
Ascii Navigation format for the original data "file.nav" 

GMT Julian date (yyddd)
GMT time 	(hhmm)
speed 		(xx.x) knots
course		(xxx.x) degrees
latitude	(ddmm.mmm) degrees*100+minutes, "S" negative
longitude	(ddmm.mmm) degrees*100+minutes, "W" negative
depth		(dddd) meters

Ascii Navigation format for the original data "file_bathy_gdc.dat" 
latitude    (xxx.xxx)
longitude   (xxxx.xxx)
unc depth   (xxxxx.x) meters
corr depth  (xxxxx.x) meters
month       (ii)  (set to zero here)
julian day  (iii) day of the year
year        (ii) assuming 1900 century
hour        (ii)
minute      (ii)
second      (ii)
Julian date (xxxxxxx.xxxxx)

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Data comments for P14N
Lines 40502-41009 in p14n.nav
  10.007N - 9.509N: uniform depth 5476, undoubtedly wrong
Lines 24941-24944 in p14n.nav
  30 20'N to 30 21'N: uniform depth 3026, looks wrong
Line 32868 in p14n.nav: depth 2078 looks wrong
Depths replaced with -9 in p14n_edit.nav and p14n_bathy_gdc.dat

General comment: this data set is irregular and generally looks to
be of low quality.