Daily Sunspot Evaluation
Observation Sheet Monday, 2 August 1971
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)
- 7
- Number of spots (f)
- 15
- Relative number (R)
- 85
- Observer
- SM
- Reading
- all checks consistent
- File
- 19710802.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | -9 | 60E | 134 | |||
| 2 | C – 5 | -26 | 37E | 157 | |||
| 3 | J – 1 | 6 | 00 | 194 | |||
| 4 | ? – 3 | -13 | 36W | 230 | 63 | ||
| 5 | J – 2 | -7 | 48W | 242 | |||
| 6 | A – 1 | 18 | 16W | 210 | |||
| 7 | A – 1 | 11 | 02W | 196 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.