Daily Sunspot Evaluation
Observation Sheet Sunday, 19 July 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)
- 9
- Number of spots (f)
- 44
- Relative number (R)
- 134
- Observer
- SM
- Reading
- all checks consistent
- File
- 19700719.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 8 | 15 | 22E | 135 | |||
| 2 | E – 13 | 8 | 68E | 89 | |||
| 3 | A – 1 | -15 | 50E | 107 | |||
| 4 | A – 1 | -7 | 28E | 129 | |||
| 5 | A – 1 | -14 | 38E | 119 | |||
| 6 | A – 4 | -10 | 02E | 155 | |||
| 7 | J – 1 | -19 | 41W | 198 | |||
| 8 | A – 5 | 18 | 70W | 227 | |||
| 9 | B – 10 | 18 | 49W | 206 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.