Daily Sunspot Evaluation
Observation Sheet Sunday, 9 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)
- 13
- Number of spots (f)
- 102
- Relative number (R)
- 232
- Observer
- TA
- Reading
- all checks consistent
- File
- 19990509.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 6 | 20 | 77W | 331 | 85W | - | |
| 2 | HS – 1 | 15 | 54W | 308 | 57W | 2 | |
| 3 | BXI – 7 | 10 | 51W | 305 | 54W | 4 | |
| 4 | AX – 2 | 20 | 40W | 294 | 43W | 2 | |
| 5 | DRO – 3 | 19 | 04E | 250 | 01E | 4.5 | |
| 6 | AX – 2 | 10 | 24E | 230 | 21E | - | |
| 7 | DAO – 6 | 12 | 26E | 228 | 23E | - | |
| 8 | CRO – 5 | 3 | 29E | 225 | 26E | ~6 | |
| 9 | HK – 8 | 20 | 38E | 216 | 35E | 4.5 | |
| 10 | EAI – 25 | 21 | 62E | 192 | 59E | 12.5 | |
| 11 | DAC – 23 | -25 | 21E | 233 | 18E | ~8.5 | |
| 12 | HS – 4 | -19 | 30E | 224 | 29E | 2.5 | |
| 13 | EAO – 10 | -29 | 59E | 197 | 54E | 11.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.