Daily Sunspot Evaluation
Observation Sheet Saturday, 28 March 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)
- 29
- Relative number (R)
- 109
- Observer
- EH
- Reading
- all checks consistent
- File
- 19700328.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 2 | 50E | 161 | |||
| 2 | J – 1 | -4 | 27E | 184 | |||
| 3 | J – 2 | -1 | 52W | 263 | |||
| 4 | D – 8 | 13 | 43W | 254 | |||
| 5 | A – 1 | 20 | 49W | 260 | |||
| 6 | H – 10 | 16 | 25W | 236 | |||
| 7 | J – 1 | 25 | 19W | 230 | |||
| 8 | D – 5 | 28 | 11W | 222 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.