Daily Sunspot Evaluation
Observation Sheet Thursday, 27 July 1978
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)
- 3
- Number of spots (f)
- 19
- Relative number (R)
- 49
- Observer
- GT
- Reading
- all checks consistent
- File
- 19780727.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 5 | 5 | 35W | 39 | 38W | ||
| 2 | A – 4 | 16 | 25W | 29 | 28W | ||
| 3 | B – 10 | 29 | 08W | 12 | 11W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.