Daily Sunspot Evaluation
Observation Sheet Monday, 15 June 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)
- 10
- Number of spots (f)
- 117
- Relative number (R)
- 217
- Observer
- EH
- Reading
- all checks consistent
- File
- 19700615.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 26 | 15 | 07E | 240 | |||
| 2 | F – 59 | 17 | 27E | 220 | |||
| 3 | J – 3 | -10 | 64E | 183 | |||
| 4 | B – 6 | -16 | 38E | 209 | |||
| 5 | A – 1 | -22 | 35E | 212 | |||
| 6 | A – 4 | -11 | 05W | 252 | |||
| 7 | J – 1 | -17 | 58W | 305 | |||
| 8 | J – 1 | 12 | 70W | 317 | |||
| 9 | A – 1 | 17 | 42W | 289 | |||
| 10 | E – 15 | 17 | 17W | 264 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.