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

Running .\bin\pdkc.pl at Wed Aug 26 08:56:21 2015 on host ephyra-vm2

Command line:
.\bin\pdkc.pl -rov vnta -dive 1556

.\bin\pdkc.pl: Getting Expedition object for diveno = 1556 and rname = vnta
set_expd(): rov = vnta, diveno = 1556
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 = 1556 AND RovName = 'vnta'

RS->Fields(0)->Value= 1740

RS->Fields(1)->Value= 916250700

RS->Fields(2)->Value= 916264800

RS->Fields(3)->Value= 1/13/1999 6:05:00 PM

RS->Fields(4)->Value= 1/13/1999 10:00:00 PM

set_expd(): $self->{EndDDD} = 013
set_expd(): $self->{StartEsecs} = 916249500
set_expd(): $self->{EndEsecs} = 916266000
set_expd(): $self->{EndDtg} = 1/13/1999 10:00:00 PM
_readLogr(): Reading videologr data from 1999013videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 916249500 & 916266000
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 916266004, self->{EndEsecs} = 916266000
_readLogr(): #LOGHOST_SYSTEM_UTC = 1647
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 916249508
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 916265994
set_expd(): Calling _refineStartAndEndEsecs...
refineStartAndEndEsecs(): LOGHOST_SYSTEM_UTC[0] = 916249508
refineStartAndEndEsecs(): $LOGHOST_SYSTEM_UTC[end] = 916265994
refineStartAndEndEsecs(): numMinBack = 22, numMinForward = 22
refineStartAndEndEsecs(): Refined StartEsecs = 916249380, Refined EndEsecs = 916266120 
_readLogr(): Reading videologr data from 1999013videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 916249380 & 916266120
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 916266124, self->{EndEsecs} = 916266120
_readLogr(): #LOGHOST_SYSTEM_UTC = 1671
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 916249388
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 916266114
rovnavCTDO(): calcUTM = 0
rovnavCTDO(): getRaw = 1
rovNav(): 1, getRaw = 1
rovNav(): 2, calcUTM = 0
rovNav(): calcUTM = 0
rovNav(): DDD = 013 (looping to 013) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999013vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999013vntaedited.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    & 
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 = 013 (looping to 013) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999013vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999013vntaedited.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