The themochrons were pulled 04/27/2012 for reading and redeployed on 4/28/2012. All housings ("Muskrat Armor") and bottles were intact with no damage. All of the polycarbonate prototype housings were also in good condition.
After reading the data and starting analysis, it was
evident there was a data problem. The ending data on three of the
thermochrons (10, 15, and 25 feet) were not the actual current date.
Either the prior reading (removing the thermochron from the reader?), or
this reading caused a date shift. On closer inspection, not only was
the end date off, but the date of the last calibration (reading) was
off. By aligning on the last calibration data, all of the data was
corrected (matched the end date). This was not a clock drift issue
with the thermochron hardware, but a data issue.