Daily Sunspot Evaluation
Observation Sheet Friday, 15 May 1970
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)
- 102
- Relative number (R)
- 212
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700515.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 7 | 19 | 01E | 296 | |||
| 2 | F – 40 | 17 | 42E | 255 | |||
| 3 | A – 2 | -1 | 08E | 289 | |||
| 4 | A – 3 | -12 | 42E | 255 | |||
| 5 | J – 2 | -8 | 17E | 280 | |||
| 6 | J – 2 | -11 | 23E | 274 | |||
| 7 | A – 1 | -17 | 43E | 254 | |||
| 8 | B – 2 | -16 | 03W | 300 | |||
| 9 | F – 37 | -9 | 07W | 304 | |||
| 10 | A – 2 | -8 | 24W | 321 | |||
| 11 | G – 4 | 15 | 73W | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.