SEDEP data format

Uncorrected depths in fathoms, date, and GMT. Data are output from program EZTD. If Matthews' table corrections (Matthews, 1939) were applied, data also includes depth corrections in fathoms and meters.

     COLS      FIELD NAME                            FORMAT
     ----      ---------------------------           ------
     1-2       day                                    I2
     3-4       month                                  I2
     5-6       year                                   I2
     7-11      time of day (GMT as HHMMT)             I4
     7-8       hour of day                            I2
     9-10      minute of day                          I2
     11        tenths of minute                       I1
     12-14     time zone                              I3
     16-20     uncorrected depth (fathoms)            I5
     22-23     Matthews' table correction number      I2
     26-30     corrected depth (fathoms)              I5
     33-37     corrected depth (meters)               I5

• UNCORRECTED DEPTH: Raw water depth recorded in fathoms.
• MATTHEWS' TABLE CORRECTION: Number of Matthews' table correction applied to depth values. If no Matthews' table correction was applied, field is zero.
• CORRECTED DEPTH: Depth values in both fathoms and meters after Matthews' table corrections were applied. If Matthews' table corrections were not applied, then fields are left zero.

SEDEP example:

          1         2         3      3
 1234567890123456789012345678901234567
 -------------------------------------
 11 87610450  4  1627  9   1664   3043
 11 87611000  4  1643  9   1680   3073
 11 87611150  4  1658  9   1696   3101
 11 87611300  4  1670  9   1708   3124
 11 87611450  4  1683  9   1722   3149
 11 87612000  4  1702  9   1741   3185
 11 87612150  4  1711  9   1751   3202
 11 87612300  4  1726  9   1766   3230
 11 87612450  4  1744  9   1785   3264
 11 87613000  4  1756  9   1797   3287

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