Daily Sunspot Evaluation
Observation Sheet Wednesday, 11 July 1979
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 9
- Number of spots (f)
- 60
- Relative number (R)
- 150
- Observer
- ED
- Reading
- all checks consistent
- File
- 19790711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 16 | 28 | 05E | 73 | 02E | 83 | |
| 2 | D – 8 | 11 | 35E | 43 | 32E | 91 | |
| 3 | J – 1 | -27 | 17W | 95 | 20W | 76 | |
| 4 | J – 1 | -18 | 12W | 90 | 15W | 75 | |
| 5 | J – 1 | 4 | 70W | 148 | 73W | 62 | |
| 6 | H – 4 | 9 | 48W | 126 | 54W | 67 | |
| 7 | H – 4 | 12 | 23W | 101 | 26W | 72 | |
| 8 | H – 8 | 24 | 52W | 130 | 55W | 66 | |
| 9 | D – 17 | 21 | 19W | 97 | 22W | 84 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.