Monthly Sunspot Observation Report
October 2025 Sunspot classification and coordinates →
99.10
Monthly mean R
20 / 31
Observation days (65%)
178
Maximum R
11
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 | 09:40 | 7 | 49 | 119 | 3 | Burçin TANIK | BT |
| Drawing | 02 | 09:25 | 9 | 73 | 163 | 3 | Korhan YELKENCİ | KY |
| Drawing | 04 | 12:50 | 9 | 88 | 178 | 3 | Süleyman FİŞEK | BT |
| Drawing | 06 | 10:00 | 11 | 54 | 164 | 3 | Korhan YELKENCİ | KY |
| Drawing | 08 | 08:10 | 2 | 8 | 28 | 3 | Burçin TANIK | BT |
| Drawing | 10 | 10:15 | 4 | 20 | 60 | 3 | Olcay PLEVNE | OP |
| Drawing | 12 | 08:30 | 4 | 48 | 88 | 2 | Korhan YELKENCİ | KY |
| Drawing | 13 | 10:20 | 5 | 75 | 125 | 3 | Süleyman FİŞEK | SF |
| Drawing | 15 | 12:15 | 4 | 69 | 109 | 3 | Burçin TANIK | BT |
| Drawing | 17 | 07:20 | 6 | 25 | 85 | 3 | Ergün EGE | EE |
| Drawing | 20 | 07:05 | 11 | 24 | 134 | 3 | Süleyman FİŞEK | SF |
| Drawing | 21 | 07:40 | 9 | 21 | 111 | 3 | Korhan YELKENCİ | SF |
| Drawing | 22 | 09:00 | 7 | 9 | 79 | 2 | Burçin TANIK | BT |
| Drawing | 23 | 07:00 | 8 | 13 | 93 | 3 | Ergün EGE | EE |
| Drawing | 24 | 09:00 | 7 | 14 | 84 | 3 | Ergün EGE | EE |
| Drawing | 26 | 10:20 | 7 | 17 | 87 | 3 | Ergün EGE | EE |
| Drawing | 27 | 07:30 | 6 | 18 | 78 | 3 | Süleyman FİŞEK | SF |
| Drawing | 29 | 11:15 | 6 | 19 | 79 | 3 | Burçin TANIK | BT |
| Drawing | 30 | 09:25 | 5 | 23 | 73 | 3 | Korhan YELKENCİ | KY |
| Drawing | 31 | 09:00 | 4 | 5 | 45 | 3 | Ergün EGE | EE |
| Monthly Mean of Relative Number: 99.10 [20 observations; 65%] | ||||||||
Observers Observation days this month and mean observing times
| Observer | Days | Mean time (all) | Mean time (own duty days) |
|---|---|---|---|
| Burçin Tanık BT | 5 | 10:04 | 10:04 [5] |
| Korhan Yelkenci KY | 5 | 09:00 | 09:20 [4] |
| Ergün Ege EE | 5 | 08:32 | 08:32 [5] |
| Süleyman Fişek SF | 4 | 09:26 | 08:18 [3] |
| Olcay Plevne OP | 1 | 10:15 | 10:15 [1] |
| Month total | 20 – 11 | 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 (2025): 212 / 304 (70%)
Days without observation: 92
Consecutive days: 3 (longest 29)