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

Running .\bin\pdkc.pl at Wed Aug 26 18:37:01 2015 on host ephyra-vm2

Command line:
.\bin\pdkc.pl -rov vnta -dive 3667

.\bin\pdkc.pl: Getting Expedition object for diveno = 3667 and rname = vnta
set_expd(): rov = vnta, diveno = 3667
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 = 3667 AND RovName = 'vnta'

RS->Fields(0)->Value= 4611

RS->Fields(1)->Value= 1322501700

RS->Fields(2)->Value= 1322511780

RS->Fields(3)->Value= 11/28/2011 5:35:00 PM

RS->Fields(4)->Value= 11/28/2011 8:23:00 PM

set_expd(): $self->{EndDDD} = 332
set_expd(): $self->{StartEsecs} = 1322500500
set_expd(): $self->{EndEsecs} = 1322512980
set_expd(): $self->{EndDtg} = 11/28/2011 8:23:00 PM
_readLogr(): Reading videologr data from 2011332datavislogr.dat.gz. 
_readLogr(): Expedition start & stop times are 1322500500 & 1322512980
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 1322494308, self->{EndEsecs} = 1322512980
_readLogr(): Calling _readAnotherLogr() with nextDDD = 333
_readAnotherLogr(): DDD = 333
_readAnotherLogr(): Reading logr data from 2011333datavislogr.dat.gz. 
_readAnotherLogr(): Expedition start & stop times are 1322500500 & 1322512980
_readAnotherLogr(): esecs of file line[0] = 1322555641, self->{EndEsecs} = 1322512980
_readLogr(): #LOGHOST_SYSTEM_UTC = -1
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 
set_expd(): Calling _refineStartAndEndEsecs...
refineStartAndEndEsecs(): LOGHOST_SYSTEM_UTC[0] = 
refineStartAndEndEsecs(): $LOGHOST_SYSTEM_UTC[end] = 
refineStartAndEndEsecs(): numMinBack = 22, numMinForward = 22
refineStartAndEndEsecs(): Refined StartEsecs = 1322500380, Refined EndEsecs = 1322513100 
_readLogr(): Reading videologr data from 2011332datavislogr.dat.gz. 
_readLogr(): Expedition start & stop times are 1322500380 & 1322513100
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 1322494308, self->{EndEsecs} = 1322513100
_readLogr(): Calling _readAnotherLogr() with nextDDD = 333
_readAnotherLogr(): DDD = 333
_readAnotherLogr(): Reading logr data from 2011333datavislogr.dat.gz. 
_readAnotherLogr(): Expedition start & stop times are 1322500380 & 1322513100
_readAnotherLogr(): esecs of file line[0] = 1322555641, self->{EndEsecs} = 1322513100
_readLogr(): #LOGHOST_SYSTEM_UTC = -1
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 
rovnavCTDO(): getRaw = 1
rovnavCTDO(): calcUTM = 0
rovNav(): 1, calcUTM = 0
rovNav(): 2, getRaw = 1
rovNav(): calcUTM = 0
rovNav(): DDD = 332 (looping to 332) 
Does file exist?: \\atlas\RovNavEdit\2011\vnta\nav2011332vntaedited.txt
   yes.
EXPD.pm: editNav flag = 
rovNav(): Opening ROV nav data from \\atlas\RovNavEdit\2011\vnta\nav2011332vnta.txt
esecs, east, north, lat, lon, head, pres
rovNav(): 332: -1  in tList after reading from \\atlas\RovNavEdit\2011\vnta\nav2011332vnta.txt
-1 in tList
-1 in {self->{rovT}}
-1 in {self->{rovH}}
rovCTDO(): ROV CTDO start & stop times are   1322504085 & 1322507070
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 = 332 (looping to 332) 
Does file exist?: \\atlas\RovNavEdit\2011\vnta\nav2011332vntaedited.txt
   yes.
EXPD.pm: editNav flag = 
rovNav(): Opening ROV nav data from \\atlas\RovNavEdit\2011\vnta\nav2011332vntaedited.txt
esecs, east, north, lat, lon, head, pres
rovNav(): 332: -1  in tList after reading from \\atlas\RovNavEdit\2011\vnta\nav2011332vntaedited.txt
-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