Daily Sunspot Evaluation
Observation Sheet Thursday, 28 October 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)
- 8
- Number of spots (f)
- 89
- Relative number (R)
- 169
- Observer
- ıH
- Reading
- all checks consistent
- File
- 19991028.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 13 | 74W | 215 | 77W | <1 | |
| 2 | CSO – 3 | 10 | 12E | 127 | 09E | <4 | |
| 3 | EKC – 21 | 9 | 26E | 115 | 23E | 13 | Cki-21 |
| 4 | DAI – 6 | 12 | 70E | 71 | 67E | 6 | |
| 5 | EKC – 31 | -12 | 28W | 169 | 31W | 17 | |
| 6 | HS – 4 | -15 | 07W | 148 | 10W | 1 | |
| 7 | CSC – 16 | -24 | 05W | 146 | 08W | 135 | Sat-16 |
| 8 | HK – 7 | -12 | 52E | 89 | 49E | <7 | Cki-7 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.