Monthly Sunspot Observation Report
May 2021 Sunspot classification and coordinates →
31.44
Monthly mean R
9 / 31
Observation days (29%)
68
Maximum R
22
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 | 17 | 07:45 | 1 | 1 | 11 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 18 | 09:00 | 3 | 3 | 33 | 3 | Oğuzhan ÇAKIR | OÇ |
| Drawing | 19 | 09:00 | 2 | 3 | 23 | 3 | Olcay PLEVNE | OP |
| Drawing | 20 | 07:25 | 2 | 7 | 27 | 3 | Süleyman FİŞEK | SF |
| Drawing | 24 | 08:25 | 1 | 8 | 18 | 4 | Ergün EGE | EE |
| Drawing | 25 | 07:05 | 4 | 28 | 68 | 3 | Korhan YELKENCİ | KY |
| Drawing | 26 | 08:15 | 2 | 23 | 43 | 3 | Oğuzhan ÇAKIR | OÇ |
| Drawing | 27 | 09:55 | 2 | 14 | 34 | 3 | Talar YONTAN | TY0 |
| Drawing | 28 | 08:40 | 2 | 6 | 26 | 3 | Burçin TANIK | BT |
| Monthly Mean of Relative Number: 31.44 [9 observations; 29%] | ||||||||
Observers Observation days this month and mean observing times
| Observer | Days | Mean time (all) | Mean time (own duty days) |
|---|---|---|---|
| Oğuzhan Çakır OÇ | 2 | 08:38 | 08:38 [2] |
| Hikmet Çakmak HÇ | 1 | 07:45 | 07:45 [1] |
| Olcay Plevne OP | 1 | 09:00 | 09:00 [1] |
| Süleyman Fişek SF | 1 | 07:25 | 07:25 [1] |
| Ergün Ege EE | 1 | 08:25 | 08:25 [1] |
| Korhan Yelkenci KY | 1 | 07:05 | 07:05 [1] |
| Talar Yontan TY0 | 1 | 09:55 | 09:55 [1] |
| Burçin Tanık BT | 1 | 08:40 | 08:40 [1] |
| Month total | 9 – 22 | Observing window: 06:00 – 08:00 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): 75 / 151 (50%)
Days without observation: 76
Consecutive days: 0 (longest 6)