Monthly Sunspot Observation Report
April 2023 Sunspot classification and coordinates →
95.58
Monthly mean R
19 / 30
Observation days (63%)
222
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 | 02 | 09:05 | 3 | 4 | 34 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 03 | 12:45 | 3 | 10 | 40 | 2 | Ergün EGE | EE |
| Drawing | 06 | 07:50 | 2 | 14 | 34 | 2 | Burçin TANIK | BT |
| Drawing | 08 | 08:45 | 2 | 20 | 40 | 3 | Korhan YELKENCİ | KY |
| Drawing | 09 | 10:20 | 3 | 14 | 44 | 2 | Ergün EGE | EE |
| Drawing | 13 | 08:25 | 8 | 90 | 170 | 3 | Burçin TANIK | BT |
| Drawing | 14 | 09:25 | 8 | 69 | 149 | 3 | O.PLEVNE=B.C. | BC |
| Drawing | 15 | 09:49 | 11 | 112 | 222 | 3 | Burçin TANIK | BT |
| Drawing | 17 | 09:50 | 8 | 31 | 111 | 3 | Ergün EGE | EE |
| Drawing | 18 | 11:00 | 7 | 65 | 135 | 3 | Korhan YELKENCİ | KY |
| Drawing | 19 | 09:10 | 4 | 35 | 75 | 3 | Olcay PLEVNE | OP |
| Drawing | 20 | 10:55 | 5 | 40 | 90 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 21 | 09:00 | 6 | 39 | 99 | 3 | Başar COŞKUNOĞLU | BC |
| Drawing | 22 | 08:30 | 8 | 33 | 113 | 3 | Korhan YELKENCİ | KY |
| Drawing | 24 | 07:35 | 6 | 10 | 70 | 3 | Ergün EGE | EE |
| Drawing | 25 | 09:30 | 5 | 20 | 70 | 3 | Korhan YELKENCİ | KY |
| Drawing | 26 | 08:00 | 6 | 35 | 95 | 3 | Olcay PLEVNE | OP |
| Drawing | 28 | 08:20 | 7 | 38 | 108 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 30 | 12:45 | 7 | 47 | 117 | 4 | Hikmet ÇAKMAK | HÇ |
| Monthly Mean of Relative Number: 95.58 [19 observations; 63%] | ||||||||
Observers Observation days this month and mean observing times
| Observer | Days | Mean time (all) | Mean time (own duty days) |
|---|---|---|---|
| Hikmet Çakmak HÇ | 4 | 10:16 | 10:16 [4] |
| Ergün Ege EE | 4 | 10:08 | 10:08 [4] |
| Korhan Yelkenci KY | 4 | 09:26 | 09:26 [4] |
| Burçin Tanık BT | 3 | 08:41 | 08:41 [3] |
| Olcay Plevne OP | 3 | 08:52 | 08:35 [2] |
| Başar Coşkunoğlu BC | 1 | 09:00 | 09:00 [1] |
| Month total | 19 – 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 (2023): 72 / 120 (60%)
Days without observation: 48
Consecutive days: 1 (longest 11)