Daily Sunspot Evaluation
Observation Sheet Monday, 6 April 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)
- 58
- Relative number (R)
- 148
- Observer
- EH
- Reading
- all checks consistent
- File
- 19700406.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 28 | 16E | 76 | |||
| 2 | J – 3 | 30 | 26E | 66 | |||
| 3 | D – 7 | 11 | 37E | 55 | |||
| 4 | J – 1 | -1 | 64E | 28 | |||
| 5 | F – 27 | -12 | 39E | 53 | |||
| 6 | G – 10 | -13 | 04E | 88 | |||
| 7 | J – 1 | 3 | 74W | 166 | |||
| 8 | J – 3 | 7 | 70W | 162 | |||
| 9 | J – 3 | 19 | 01W | 93 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.