Daily Sunspot Evaluation
Observation Sheet Monday, 11 May 1987
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)
- 2
- Number of spots (f)
- 16
- Relative number (R)
- 36
- Observer
- TS
- Reading
- all checks consistent
- File
- 19870511.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 14 | -31 | 00 | 115 | 00 | 10 | 27 |
| 2 | AXX – 2 | -21 | 34E | 81 | 31E | 0.5 | 29 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.