Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 May 1999
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)
- 9
- Number of spots (f)
- 95
- Relative number (R)
- 185
- Observer
- TA
- Reading
- all checks consistent
- File
- 19990511.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 16 | 82W | 309 | 84W | ~7 | |
| 2 | ? – 4 | 10 | 79W | 306 | 81W | ~7 | |
| 3 | AX – 1 | 13 | 00 | 227 | 02W | - | |
| 4 | HK – 15 | 20 | 11E | 216 | 09E | 6.5 | |
| 5 | EAC – 28 | 21 | 34E | 193 | 32E | ~14 | |
| 6 | DRI – 18 | -25 | 05W | 232 | 07W | ~9 | |
| 7 | CRF – 12 | -19 | 03E | 224 | 01E | ~4 | |
| 8 | ERO – 15 | -28 | 28E | 199 | 26E | ~11 | |
| 9 | ? – 1 | -20 | 78E | 149 | 76E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.