Daily Sunspot Evaluation
Observation Sheet Tuesday, 27 March 1951
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)
- 7
- Number of spots (f)
- 38
- Relative number (R)
- 108
- Observer
- WG
- Reading
- all checks consistent
- File
- 19510327.jpg
Sunspot groups
| No | Group (class – spots) | r | p | Margin no. |
|---|---|---|---|---|
| 1 | C – 18 | 0.36 | 15 | |
| 2 | B – 7 | 0.64 | 77 | |
| 3 | C – 5 | 0.93 | 236 | |
| 4 | J – 1 | 0.7 | 255 | |
| 5 | H – 3 | 0.88 | 261 | |
| 6 | A – 2 | 0.74 | 262 | |
| 7 | A – 2 | 0.47 | 281 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.