Daily Sunspot Evaluation
Observation Sheet Sunday, 24 July 1977
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)
- 4
- Number of spots (f)
- 20
- Relative number (R)
- 60
- Observer
- HM
- Reading
- all checks consistent
- File
- 19770724.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 1 | 16 | 35E | 146 | 32E | ||
| 2 | A – 13 | -24 | 53E | 128 | 50E | ||
| 3 | B – 3 | -30 | 23E | 158 | 20E | ||
| 4 | A – 3 | 20 | 03W | 184 | 06W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.