| Chester2012 — Dataset Notes | |
| January 1, 2012 00:00 — January 18, 2012 15:30 | |
| Collected under ice cover | |
| June 20, 2012 00:00 — June 29, 2012 11:00 | |
| All sensors are out of commission | |
| Chester2012 — Sonde Cleaning/Calibrations | |
| December 22, 2011 10:15 | cleaned |
| January 11, 2012 10:00 | cleaned |
| February 29, 2012 12:00 | cleaned and calibrated |
| April 9, 2012 11:00 | cleaned |
| April 24, 2012 10:30 | cleaned |
| May 22, 2012 15:00 | cleaned |
| June 1, 2012 11:30 | cleaned and calibrated |
| June 8, 2012 11:00 | cleaned |
| July 18, 2012 09:45 | cleaned |
| July 25, 2012 09:30 | cleaned |
| August 1, 2012 10:30 | cleaned |
| August 8, 2012 09:00 | cleaned |
| August 14, 2012 13:30 | cleaned |
| August 21, 2012 09:15 | cleaned |
| August 28, 2012 09:30 | cleaned |