Daily Sunspot Evaluation
Observation Sheet Thursday, 12 May 1960
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)
- 8
- Number of spots (f)
- 45
- Relative number (R)
- 125
- Observer
- FY
- Reading
- all checks consistent
- File
- 19600512.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 5 | 17 | 63E | ||||
| 2 | J – 1 | 6 | 76E | ||||
| 3 | H – 8 | -10 | 18E | ||||
| 4 | B – 2 | -15 | 49W | ||||
| 5 | H – 1 | -8 | 74W | ||||
| 6 | ? – 3 | 12 | 80W | ||||
| 7 | C – 4 | 9 | 16W | ||||
| 8 | F – 21 | 30 | 58W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.