| Chester2009 — Dataset Notes | |
| January 1, 2009 00:00 — March 23, 2009 12:00 | |
| Collected under ice cover | |
| Chester2009 — Sonde Cleaning/Calibrations | |
| December 23, 2008 10:30 | cleaned |
| May 1, 2009 13:00 | cleaned |
| May 28, 2009 11:00 | cleaned |
| June 18, 2009 10:00 | cleaned |
| June 29, 2009 12:00 | cleaned |
| July 24, 2009 13:30 | cleaned |
| August 4, 2009 09:30 | cleaned |
| August 14, 2009 09:30 | cleaned |
| August 27, 2009 10:00 | cleaned |
| September 8, 2009 10:00 | cleaned |
| September 18, 2009 09:30 | cleaned |
| October 2, 2009 09:00 | cleaned |
| October 14, 2009 12:30 | cleaned |
| October 29, 2009 09:30 | cleaned |
| November 6, 2009 13:00 | cleaned |