Daily Sunspot Evaluation
Observation Sheet Tuesday, 6 July 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)
- 5
- Number of spots (f)
- 48
- Relative number (R)
- 98
- Observer
- HM
- Reading
- all checks consistent
- File
- 19710706.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 9 | -7 | 65E | 124 | |||
| 2 | B – 3 | -9 | 68E | 121 | |||
| 3 | F – 32 | -13 | 39W | 228 | |||
| 4 | H – 3 | -8 | 52W | 241 | |||
| 5 | J – 1 | 16 | 39W | 228 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.