Daily Sunspot Evaluation
Observation Sheet Thursday, 9 May 1985
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)
- 32
- Relative number (R)
- 72
- Observer
- HM
- Reading
- all checks consistent
- File
- 19850509.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 13 | 5 | 34W | 94 | 37W | 8.6 | |
| 2 | AXX – 4 | 3 | 12W | 72 | 15W | 2.1 | |
| 3 | CAO – 2 | 6 | 69E | 351 | 66E | 4.1 | |
| 4 | DKF – 13 | -13 | 60E | 0 | 57E | 85.34 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.