Monthly Sunspot Observation Report
April 2011 Sunspot classification and coordinates →
101.18
Monthly mean R
17 / 30
Observation days (57%)
173
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 | 07 | 08:20 | 6 | 29 | 89 | 3 | Sinan ALİŞ | SA |
| Drawing | 08 | 11:55 | 5 | 30 | 80 | 2 | B.COŞKUNOĞLU+H.Ç. | BC |
| Drawing | 09 | 08:50 | 5 | 48 | 98 | 3 | Sinan ALİŞ | SA |
| Drawing | 10 | 09:35 | 3 | 34 | 64 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 11 | 06:40 | 4 | 59 | 99 | 3 | Korhan YELKENCİ | KY |
| Drawing | 12 | 06:35 | 6 | 54 | 114 | 3 | Hikmet ÇAKMAK | HÇ |
| Drawing | 13 | 10:55 | 7 | 87 | 157 | 3 | Asuman GÜLTEKİN | AG0 |
| Drawing | 15 | 06:30 | 8 | 93 | 173 | 4 | H.ÇAKMAK+B.C. | BC |
| Drawing | 16 | 06:25 | 8 | 60 | 140 | 3 | Asuman GÜLTEKİN | AG0 |
| Drawing | 17 | 06:30 | 4 | 56 | 96 | 2 | Korhan YELKENCİ | KY |
| Drawing | 21 | 10:45 | 5 | 33 | 83 | 3 | Sinan ALİŞ | SA |
| Drawing | 22 | 07:00 | 4 | 62 | 102 | 4 | B.COŞKUNOĞLU+H.Ç. | BC |
| Drawing | 23 | 10:40 | 2 | 35 | 55 | 3 | Başar COŞKUNOĞLU | BC |
| Drawing | 25 | 07:10 | 3 | 35 | 65 | 3 | K.YELKENCİ+H.Ç. | KY |
| Drawing | 26 | 07:15 | 6 | 47 | 107 | 4 | Hikmet ÇAKMAK | HÇ |
| Drawing | 29 | 11:45 | 7 | 36 | 106 | 3 | H.ÇAKMAK+B.C. | BC |
| Drawing | 30 | 09:50 | 6 | 32 | 92 | 4 | Hikmet ÇAKMAK | HÇ |
| Monthly Mean of Relative Number: 101.18 [17 observations; 57%] | ||||||||
Observers Observation days this month and mean observing times
| Observer | Days | Mean time (all) | Mean time (own duty days) |
|---|---|---|---|
| Hikmet Çakmak HÇ | 6 | 08:35 | 08:19 [4] |
| Sinan Aliş SA | 3 | 09:18 | 09:18 [3] |
| Başar Coşkunoğlu BC | 3 | 09:52 | 09:52 [3] |
| Korhan Yelkenci KY | 3 | 06:47 | 06:47 [3] |
| Asuman Gültekin Annak AG0 | 2 | 08:40 | 08:40 [2] |
| Month total | 17 – 13 | 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 (2011): 77 / 120 (64%)
Days without observation: 43
Consecutive days: 2 (longest 7)