Daily Sunspot Evaluation
Observation Sheet Friday, 28 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)
- 10
- Number of spots (f)
- 64
- Relative number (R)
- 164
- Observer
- TÇ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19990528.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | 31 | 15W | 18 | 18W | ~1 | |
| 2 | HR – 12 | 25 | 06E | 357 | 03E | ~2 | |
| 3 | HS – 1 | 15 | 58E | 305 | 55E | ~2 | |
| 4 | ? – 1 | 12 | 78E | 285 | 75E | ||
| 5 | ? – 1 | -17 | 83W | 85 | 86W | ||
| 6 | HR – 4 | -30 | 68E | 295 | 65E | 2 | |
| 7 | ? – 4 | -27 | 71E | 292 | 68E | ~1 | |
| 8 | DAI – 20 | 18 | 140E | 316 ⚠ | 136E | ~0.7 | |
| 9 | HK – 4 | 19 | 250E | 338 ⚠ | 220E | ~5.5 | |
| 10 | GRO – 15 | -15 | 30W | 33 | 33W | ~16 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.