Daily Sunspot Evaluation
Observation Sheet Monday, 16 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)
- 4
- Number of spots (f)
- 5
- Relative number (R)
- 45
- Observer
- EH
- Reading
- all checks consistent
- File
- 19700316.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 18E | 350 | ||||
| 2 | J – 1 | 65E | 303 | ||||
| 3 | H – 1 | 79W | 87 | ||||
| 4 | G – 2 | 11W | 19 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.