Monthly Sunspot Observation Report
April 2008 Sunspot classification and coordinates →
2.74
Monthly mean R
23 / 30
Observation days (77%)
14
Maximum R
7
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 |
|---|---|---|---|---|---|---|---|---|
| – | 02 | 09:00 | 1 | 3 | 13 | 3 | Sinan ALİŞ | |
| – | 03 | 13:15 | 1 | 2 | 12 | 2 | F. Korhan YELKENCİ | |
| Drawing | 04 | 06:45 | 1 | 1 | 11 | 3 | H. Hasan ESENOĞLU | |
| Drawing | 05 | 09:10 | 0 | 0 | 0 | 4 | Sinan ALİŞ | |
| Drawing | 07 | 06:15 | 0 | 0 | 0 | 4 | H. Hasan ESENOĞLU | |
| Drawing | 08 | 05:30 | 0 | 0 | 0 | 4 | İpek H. ÇAY | |
| Drawing | 10 | 08:20 | 0 | 0 | 0 | 3 | Sinan ALİŞ | |
| Drawing | 11 | 05:30 | 0 | 0 | 0 | 3 | İpek H. ÇAY | |
| Drawing | 12 | 07:00 | 0 | 0 | 0 | 3 | F. Korhan YELKENCİ | |
| Drawing | 14 | 10:15 | 0 | 0 | 0 | 2 | H. Hasan ESENOĞLU | |
| Drawing | 15 | 07:30 | 0 | 0 | 0 | 3 | İpek H. ÇAY | |
| Drawing | 16 | 07:25 | 0 | 0 | 0 | 4 | F. Korhan YELKENCİ | |
| Drawing | 17 | 07:37 | 0 | 0 | 0 | 2 | Sinan ALİŞ | |
| Drawing | 18 | 08:10 | 0 | 0 | 0 | 3 | F. Korhan YELKENCİ | |
| Drawing | 19 | 07:35 | 0 | 0 | 0 | 5 | İpek H. ÇAY | |
| Drawing | 20 | 13:45 | 0 | 0 | 0 | 4 | Sinan ALİŞ | |
| Drawing | 21 | 07:05 | 0 | 0 | 0 | 4 | H. Hasan ESENOĞLU | |
| Drawing | 22 | 07:05 | 1 | 4 | 14 | 2 | İpek H. ÇAY | |
| Drawing | 23 | 09:30 | 1 | 3 | 13 | 2 | Sinan ALİŞ | |
| Drawing | 24 | 13:40 | 0 | 0 | 0 | 2 | F. Korhan YELKENCİ | |
| Drawing | 27 | 10:00 | 0 | 0 | 0 | 2 | F. Korhan YELKENCİ | |
| Drawing | 29 | 06:55 | 0 | 0 | 0 | 3 | İpek H. ÇAY | |
| Drawing | 30 | 09:10 | 0 | 0 | 0 | 4 | H. Hasan ESENOĞLU | |
| Monthly Mean of Relative Number: 2.74 [23 observations; 77%] | ||||||||
Observers Observation days this month and mean observing times
| Observer | Days | Mean time (all) | Mean time (own duty days) |
|---|---|---|---|
| Sinan Aliş SA | 6 | 09:34 | --:-- |
| Korhan Yelkenci KY | 6 | 09:55 | --:-- |
| Ipek Hamami Cay ıH | 6 | 06:41 | --:-- |
| Hasan Hüseyin Esenoğlu HE | 5 | 07:54 | --:-- |
| Month total | 23 – 7 | 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 (2008): 91 / 121 (75%)
Days without observation: 30
Consecutive days: 2 (longest 23)