Monthly Sunspot Observation Report
December 2017 Sunspot classification and coordinates →
9.86
Monthly mean R
21 / 31
Observation days (68%)
38
Maximum R
10
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 | 01 | 08:15 | 1 | 1 | 11 | 3 | Talar YONTAN | TY0 |
| Drawing | 02 | 07:05 | 0 | 0 | 0 | 3 | Talar YONTAN | TY0 |
| Drawing | 03 | 08:45 | 0 | 0 | 0 | 3 | H.ÇAKMAK-B.C. | BC |
| Drawing | 06 | 07:55 | 1 | 5 | 15 | 3 | Özgecan ÖNALTAŞ | ÖÖ |
| Drawing | 07 | 10:25 | 1 | 1 | 11 | 2 | Korhan YELKENCİ | KY |
| Drawing | 08 | 07:45 | 0 | 0 | 0 | 3 | Süleyman FİŞEK | SF |
| Drawing | 09 | 09:10 | 0 | 0 | 0 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 10 | 12:30 | 1 | 3 | 13 | 3 | Özgecan ÖNALTAŞ | ÖÖ |
| Drawing | 11 | 06:50 | 1 | 1 | 11 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 12 | 08:10 | 1 | 3 | 13 | 3 | H.ÇAKMAK-S.K. | SK0 |
| Drawing | 13 | 09:05 | 0 | 0 | 0 | 3 | Özgecan ÖNALTAŞ | ÖÖ |
| Drawing | 14 | 08:10 | 0 | 0 | 0 | 3 | Süleyman FİŞEK | SF |
| Drawing | 15 | 07:30 | 0 | 0 | 0 | 3 | Talar YONTAN | TY0 |
| Drawing | 16 | 06:10 | 0 | 0 | 0 | 3 | Korhan YELKENCİ | KY |
| Drawing | 19 | 10:50 | 1 | 1 | 11 | 3 | T.YONTAN=H.Ç. | BC |
| Drawing | 20 | 09:00 | 1 | 9 | 19 | 3 | Süleyman FİŞEK | SF |
| Drawing | 24 | 06:50 | 2 | 15 | 35 | 3 | Korhan YELKENCİ | KY |
| Drawing | 25 | 08:25 | 2 | 18 | 38 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 26 | 09:45 | 1 | 7 | 17 | 3 | H.ÇAKMAK-S.K. | SK0 |
| Drawing | 27 | 09:40 | 1 | 3 | 13 | 3 | H.ÇAKMAK=Ö.Ö. | ÖÖ |
| Drawing | 28 | 08:00 | 0 | 0 | 0 | 3 | H.ÇAKMAK=B.C. | BC |
| Monthly Mean of Relative Number: 9.86 [21 observations; 68%] | ||||||||
Observers Observation days this month and mean observing times
| Observer | Days | Mean time (all) | Mean time (own duty days) |
|---|---|---|---|
| Hikmet Çakmak HÇ | 8 | 08:36 | 08:08 [3] |
| Talar Yontan TY0 | 4 | 08:25 | 07:37 [3] |
| Ozgecan Önal Taş ÖÖ | 3 | 09:50 | 09:50 [3] |
| Korhan Yelkenci KY | 3 | 07:48 | 07:48 [3] |
| Süleyman Fişek SF | 3 | 08:18 | 08:18 [3] |
| Month total | 21 – 10 | 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 (2017): 301 / 365 (82%)
Days without observation: 64
Consecutive days: 0 (longest 58)