Daily Sunspot Evaluation
Observation Sheet Saturday, 20 May 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)
- 8
- Number of spots (f)
- 47
- Relative number (R)
- 127
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780520.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 6 | -34 | 48E | 136 | 45E | ||
| 2 | C – 5 | -29 | 02E | 182 | 01W | ||
| 3 | G – 12 | -28 | 10W | 194 | 13W | ||
| 4 | C – 7 | -25 | 72W | 256 | 75W | ||
| 5 | C – 9 | 20 | 36W | 220 | 39W | ||
| 6 | C – 4 | 23 | 25W | 209 | 28W | ||
| 7 | A – 2 | 14 | 15W | 199 | 18W | ||
| 8 | H – 2 | 12 | 07W | 191 | 10W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.