Daily Sunspot Evaluation
Observation Sheet Monday, 14 September 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)
- 8
- Number of spots (f)
- 33
- Relative number (R)
- 113
- Observer
- HA
- Reading
- all checks consistent
- File
- 19700914.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 13 | 12 | 18E | 105 | |||
| 2 | C – 4 | -22 | 38E | 85 | |||
| 3 | A – 1 | -11 | 14E | 109 | |||
| 4 | G – 4 | -11 | 08E | 115 | |||
| 5 | J – 1 | -17 | 30W | 153 | |||
| 6 | D – 6 | -12 | 70W | 195 | |||
| 7 | J – 3 | 3 | 29W | 152 | |||
| 8 | J – 1 | 10 | 70W | 193 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.