Monthly Sunspot Observation Report
December 2018 Sunspot classification and coordinates →
2.79
Monthly mean R
14 / 31
Observation days (45%)
21
Maximum R
17
Days without observation
D: Day · T: Time (UT) · g: Number of groups · f: Number of spots · R: Relative number (10g+f) · Q: Seeing 1–5 · O: Observer · G: Assigned observer
| Drawing | D | T (UT) | g | f | R | Q | O | G |
|---|---|---|---|---|---|---|---|---|
| Drawing | 02 | 10:50 | 0 | 0 | 0 | 3 | Talar YONTAN | TY0 |
| Drawing | 03 | 11:15 | 0 | 0 | 0 | 3 | Korhan YELKENCİ | KY |
| Drawing | 07 | 08:05 | 1 | 11 | 21 | 3 | Talar YONTAN | TY0 |
| Drawing | 08 | 10:45 | 0 | 0 | 0 | 3 | Olcay PLEVNE | OP |
| Drawing | 09 | 09:45 | 0 | 0 | 0 | 4 | Özgecan ÖNALTAŞ | ÖÖ |
| Drawing | 13 | 11:40 | 0 | 0 | 0 | 3 | Ö.ÖNALTAŞ-K.Y. | KY |
| Drawing | 15 | 11:25 | 1 | 8 | 18 | 3 | Talar YONTAN | TY0 |
| Drawing | 21 | 11:30 | 0 | 0 | 0 | 3 | Ö.ÖNALTAŞ-T.Y. | TY0 |
| Drawing | 22 | 08:00 | 0 | 0 | 0 | 3 | Başar COŞKUNOĞLU | BC |
| Drawing | 23 | 12:07 | 0 | 0 | 0 | 3 | Ö.ÖNALTAŞ-O.P. | OP |
| Drawing | 24 | 07:40 | 0 | 0 | 0 | 3 | T.YONTAN+B.A. | ÖÖ |
| Drawing | 26 | 08:05 | 0 | 0 | 0 | 3 | Özgecan ÖNALTAŞ | ÖÖ |
| Drawing | 28 | 07:05 | 0 | 0 | 0 | 3 | Talar YONTAN | TY0 |
| Drawing | 31 | 09:04 | 0 | 0 | 0 | 3 | Korhan YELKENCİ | KY |
| Monthly Mean of Relative Number: 2.79 [14 observations; 45%] | ||||||||
Observers Observation days this month and mean observing times
| Observer | Days | Mean time (all) | Mean time (own duty days) |
|---|---|---|---|
| Talar Yontan TY0 | 5 | 09:01 | 09:21 [4] |
| Ozgecan Önal Taş ÖÖ | 5 | 10:37 | 08:55 [2] |
| Korhan Yelkenci KY | 2 | 10:09 | 10:09 [2] |
| Olcay Plevne OP | 1 | 10:45 | 10:45 [1] |
| Başar Coşkunoğlu BC | 1 | 08:00 | 08:00 [1] |
| Month total | 14 – 17 | Observing window: 07:00 – 09:00 UT | |
Colour: black = within the window, green = up to 30 min late, purple = later.
The last twelve months Development of the daily and monthly mean relative number
Observation days (2018): 297 / 365 (81%)
Days without observation: 68
Consecutive days: 1 (longest 99)