Daily Sunspot Evaluation
Observation Sheet Friday, 28 March 1952
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)
- 5
- Number of spots (f)
- 39
- Relative number (R)
- 89
- Observer
- MH
- Reading
- all checks consistent
- File
- 19520328.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 3 | 0.52 | 59 | |
| 2 | B – 7 | 0.47 | 91 | |
| 3 | C – 21 | 0.45 | 241 | |
| 4 | A – 4 | 0.19 | 260 | |
| 5 | B – 4 | 0.64 | 267 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.