Illegal division by zero at .\bin\pdkc.pl line 536.

Running .\bin\pdkc.pl at Wed Aug 26 09:02:46 2015 on host ephyra-vm2

Command line:
.\bin\pdkc.pl -rov vnta -dive 1617

.\bin\pdkc.pl: Getting Expedition object for diveno = 1617 and rname = vnta
set_expd(): rov = vnta, diveno = 1617
set_expd(): Executing sql:
SELECT ExpeditionID_FK, DateDiff(ss, '01/01/70', DiveStartDtg), DateDiff(ss, '01/01/70', DiveEndDtg), DiveStartDtg, DiveEndDtg FROM Dive WHERE DiveNumber = 1617 AND RovName = 'vnta'

RS->Fields(0)->Value= 1809

RS->Fields(1)->Value= 928449600

RS->Fields(2)->Value= 928459500

RS->Fields(3)->Value= 6/3/1999 10:40:00 PM

RS->Fields(4)->Value= 6/4/1999 1:25:00 AM

set_expd(): $self->{EndDDD} = 155
set_expd(): $self->{StartEsecs} = 928448400
set_expd(): $self->{EndEsecs} = 928460700
set_expd(): $self->{EndDtg} = 6/4/1999 1:25:00 AM
_readLogr(): Reading videologr data from 1999154videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 928448400 & 928460700
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 928454391, self->{EndEsecs} = 928460700
_readLogr(): Calling _readAnotherLogr() with nextDDD = 155
_readAnotherLogr(): DDD = 155
_readAnotherLogr(): Reading logr data from 1999155videologr.dat.gz. 
_readAnotherLogr(): Expedition start & stop times are 928448400 & 928460700
_readAnotherLogr(): esecs of file line[0] = 928460709, self->{EndEsecs} = 928460700
_readLogr(): #LOGHOST_SYSTEM_UTC = 1228
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 928448404
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 928460699
set_expd(): Calling _refineStartAndEndEsecs...
refineStartAndEndEsecs(): LOGHOST_SYSTEM_UTC[0] = 928448404
refineStartAndEndEsecs(): $LOGHOST_SYSTEM_UTC[end] = 928460699
refineStartAndEndEsecs(): numMinBack = 22, numMinForward = 22
refineStartAndEndEsecs(): Refined StartEsecs = 928448280, Refined EndEsecs = 928460820 
_readLogr(): Reading videologr data from 1999154videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 928448280 & 928460820
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 928454391, self->{EndEsecs} = 928460820
_readLogr(): Calling _readAnotherLogr() with nextDDD = 155
_readAnotherLogr(): DDD = 155
_readAnotherLogr(): Reading logr data from 1999155videologr.dat.gz. 
_readAnotherLogr(): Expedition start & stop times are 928448280 & 928460820
_readAnotherLogr(): esecs of file line[0] = 928460829, self->{EndEsecs} = 928460820
_readLogr(): #LOGHOST_SYSTEM_UTC = 1252
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 928448284
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 928460819
rovnavCTDO(): getRaw = 1
rovnavCTDO(): calcUTM = 0
rovNav(): 1, calcUTM = 0
rovNav(): 2, getRaw = 1
rovNav(): calcUTM = 0
rovNav(): DDD = 154 (looping to 155) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999154vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999154vntaedited.txt does not exist.  Skipping this file...
rovNav(): DDD = 155 (looping to 155) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999155vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999155vntaedited.txt does not exist.  Skipping this file...
-1 in tList
-1 in {self->{rovT}}
-1 in {self->{rovH}}
rovCTDO(): ROV CTDO start & stop times are   928459050 & 928454880
rovNavCTDO(): Looking up ROVCTDO data ('.'found, 'X' exceeds max iter.):

rovGDCListRefs(): dMedian = 
rovGDCListRefs(): dStats->sample_range = 
rovGDCListRefs(): rovDepth (paroscientific) range is less than 1.  Using rovctd calculated depth
rovNav(): 1, calcUTM = 0
rovNav(): 2, doNotRefineStartEnd = 1
rovNav(): calcUTM = 0
rovNav(): DDD = 154 (looping to 155) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999154vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999154vntaedited.txt does not exist.  Skipping this file...
rovNav(): DDD = 155 (looping to 155) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999155vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999155vntaedited.txt does not exist.  Skipping this file...
-1 in tList
-1 in {self->{rovT}}
-1 in {self->{rovH}}
rovGDCListRefs(): dMedian = 
rovGDCListRefs(): dStats->sample_range = 
rovGDCListRefs(): rovDepth (paroscientific) range is less than 1.  Using rovctd calculated depth

.\bin\pdkc.pl: -------------------------------------------------------------------------------

Position subsampling set to 1