Daily Sunspot Evaluation
Observation Sheet Thursday, 30 March 1972
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)
- 11
- Relative number (R)
- 51
- Observer
- ED
- Reading
- all checks consistent
- File
- 19720330.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | -6 | 50E | 206 | |||
| 2 | J – 1 | -8 | 54E | 202 | |||
| 3 | D – 5 | -8 | 64E | 192 | |||
| 4 | A – 2 | -27 | 08E | 248 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.