Daily Sunspot Evaluation
Observation Sheet Friday, 1 August 1969
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)
- 11
- Number of spots (f)
- 105
- Relative number (R)
- 215
- Observer
- SM
- Reading
- all checks consistent
- File
- 19690801.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 19 | 38E | 85 | |||
| 2 | B – 5 | 8 | 62E | 61 | |||
| 3 | A – 3 | 5 | 09E | 114 | |||
| 4 | D – 14 | -12 | 58E | 65 | |||
| 5 | A – 3 | -12 | 30E | 93 | |||
| 6 | A – 1 | -16 | 16E | 107 | |||
| 7 | F – 55 | -9 | 03W | 126 | |||
| 8 | H – 11 | -16 | 28W | 151 | |||
| 9 | B – 8 | -13 | 55W | 178 | |||
| 10 | A – 1 | 13 | 36W | 159 | |||
| 11 | A – 3 | 28 | 68W | 191 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.