| Observation Date | Latitude | Longitude | Total Ice Concentration | Primary Observer | |
|---|---|---|---|---|---|
| 2018-10-02 00:13:00 UTC | 70.7711 | -125.2208 | 0 | Kazutoshi Sato | |
| 2018-10-01 23:04:00 UTC | 70.8906 | -126.1531 | 3 | Kazutoshi Sato | |
| 2018-10-01 22:26:00 UTC | 70.9211 | -126.5406 | 8 | Kazutaka Tateyama | |
| 2018-10-01 21:07:00 UTC | 70.95 | -126.8239 | 10 | Kazutaka Tateyama | |
| 2018-10-01 19:16:00 UTC | 71.0278 | -127.2839 | 10 | Kazutaka Tateyama | |
| 2018-10-01 17:33:00 UTC | 71.0703 | -127.6206 | 10 | Kazutaka Tateyama | |
| 2018-10-01 15:59:00 UTC | 71.1094 | -127.9081 | 10 | Kazutaka Tateyama | |
| 2018-10-01 15:10:00 UTC | 71.115 | -128.0944 | 10 | Kazutaka Tateyama | |
| 2018-10-01 06:06:00 UTC | 71.0969 | -128.2942 | 10 | Kazutaka Tateyama | |
| 2018-10-01 05:10:00 UTC | 71.1083 | -128.3608 | 10 | Kazutaka Tateyama | |
| 2018-10-01 04:06:00 UTC | 71.0831 | -128.6697 | 10 | Kazutaka Tateyama | |
| 2018-10-01 03:19:00 UTC | 71.0786 | -128.8064 | 10 | Kazutaka Tateyama | |
| 2018-10-01 02:03:00 UTC | 71.0897 | -129.0411 | 9 | Kazutaka Tateyama | |
| 2018-10-01 01:04:00 UTC | 71.0508 | -129.2722 | 10 | HayatoOkuda | |
| 2018-10-01 00:07:00 UTC | 70.9703 | -129.4169 | 10 | HayatoOkuda | |
| 2018-09-30 23:25:00 UTC | 70.9361 | -129.6347 | 10 | HayatoOkuda | |
| 2018-09-30 22:14:00 UTC | 70.9392 | -129.875 | 10 | Kazutoshi Sato | |
| 2018-09-30 21:01:00 UTC | 70.9539 | -130.1011 | 10 | Kazutoshi Sato | |
| 2018-09-30 20:00:00 UTC | 70.9108 | -130.3761 | 10 | Kazutoshi Sato | |
| 2018-09-30 19:00:00 UTC | 70.8686 | -130.5883 | 10 | Kazutoshi Sato | |
| 2018-09-30 18:00:00 UTC | 70.7856 | -130.9014 | 10 | Kazutoshi Sato | |
| 2018-09-30 17:00:00 UTC | 70.7569 | -131.2914 | 10 | Kazutoshi Sato | |
| 2018-09-30 16:01:00 UTC | 70.6883 | -131.5017 | 10 | Kazutoshi Sato | |
| 2018-09-30 15:00:00 UTC | 70.6189 | -131.7453 | 10 | Kazutoshi Sato | |
| 2018-09-30 14:03:00 UTC | 70.605 | -132.0028 | 10 | Kazutaka Tateyama |