Monthly Sunspot Observation Report
February 2021 Sunspot classification and coordinates →
11.13
Monthly mean R
15 / 28
Observation days (54%)
46
Maximum R
13
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 | 09:12 | 1 | 2 | 12 | 3 | Burçin TANIK | BT |
| Drawing | 03 | 07:50 | 1 | 1 | 11 | 3 | Olcay PLEVNE | OP |
| Drawing | 04 | 10:15 | 1 | 1 | 11 | 3 | Talar YONTAN | TY0 |
| Drawing | 05 | 10:30 | 0 | 0 | 0 | 3 | Başar COŞKUNOĞLU | BC |
| Drawing | 08 | 08:40 | 0 | 0 | 0 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 10 | 08:00 | 0 | 0 | 0 | 3 | Olcay PLEVNE | OP |
| Drawing | 11 | 09:55 | 0 | 0 | 0 | 3 | Talar YONTAN | TY0 |
| Drawing | 12 | 12:00 | 0 | 0 | 0 | 3 | Oğuzhan ÇAKIR | OÇ |
| Drawing | 16 | 10:50 | 0 | 0 | 0 | 3 | Burçin TANIK | BT |
| Drawing | 17 | 09:50 | 0 | 0 | 0 | 3 | Korhan YELKENCİ | KY |
| Drawing | 19 | 09:30 | 1 | 1 | 11 | 3 | Oğuzhan ÇAKIR | OÇ |
| Drawing | 22 | 08:20 | 1 | 3 | 13 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 23 | 07:35 | 2 | 26 | 46 | 3 | Süleyman FİŞEK | KY |
| Drawing | 25 | 10:00 | 2 | 19 | 39 | 3 | Süleyman FİŞEK | SF |
| Drawing | 26 | 07:30 | 1 | 14 | 24 | 3 | Oğuzhan ÇAKIR | BC |
| Monthly Mean of Relative Number: 11.13 [15 observations; 54%] | ||||||||
Observers Observation days this month and mean observing times
| Observer | Days | Mean time (all) | Mean time (own duty days) |
|---|---|---|---|
| Oğuzhan Çakır OÇ | 3 | 09:40 | 10:45 [2] |
| Burçin Tanık BT | 2 | 10:01 | 10:01 [2] |
| Olcay Plevne OP | 2 | 07:55 | 07:55 [2] |
| Talar Yontan TY0 | 2 | 10:05 | 10:05 [2] |
| Hikmet Çakmak HÇ | 2 | 08:30 | 08:30 [2] |
| Süleyman Fişek SF | 2 | 08:48 | 10:00 [1] |
| Başar Coşkunoğlu BC | 1 | 10:30 | 10:30 [1] |
| Korhan Yelkenci KY | 1 | 09:50 | 09:50 [1] |
| Month total | 15 – 13 | 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 (2021): 28 / 59 (47%)
Days without observation: 31
Consecutive days: 0 (longest 5)