Daily Sunspot Evaluation
Observation Sheet Monday, 27 May 1957
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)
- 11
- Number of spots (f)
- 34
- Relative number (R)
- 144
- Observer
- FY
- Reading
- all checks consistent
- File
- 19570527.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 3 | 23 | 2E | ||||
| 2 | J – 1 | -23 | 67E | ||||
| 3 | H – 5 | -22 | 31E | ||||
| 4 | A – 1 | -10 | 0 | ||||
| 5 | A – 1 | -20 | 13W | ||||
| 6 | J – 1 | -11 | 18W | ||||
| 7 | C – 4 | -20 | 64W | ||||
| 8 | ? – 3 | -15 | 70W | ||||
| 9 | J – 1 | -9 | 41W | ||||
| 10 | A – 4 | 15 | 41W | ||||
| 11 | C – 10 | 22 | 32W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.