Daily Sunspot Evaluation
Observation Sheet Tuesday, 14 September 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)
- 7
- Number of spots (f)
- 101
- Relative number (R)
- 171
- Observer
- NA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19990914.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAC – 36 | 16 | 25W | 26 | 27W | 11.5 | |
| 2 | HS – 2 | 13 | 07W | 8 | 09W | 11 | |
| 3 | EHC – 21 | 22 | 02W | 8 ⚠ | 04W | 1.5 | Ekc-21 |
| 4 | HS – 2 | 21 | 31E | 330 | 29E | 1.3 | C50-2 |
| 5 | HR – 3 | 12 | 43E | 298 ⚠ | 61E | 1.2 | Hr-3 |
| 6 | ? – 9 | 15 | 71E | 290 | 69E | 1.8 | |
| 7 | ESI – 28 | -26 | 05W | 6 | 07W | 12.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.