Daily Sunspot Evaluation
Observation Sheet Monday, 17 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)
- 6
- Number of spots (f)
- 43
- Relative number (R)
- 103
- Observer
- ıH
- Reading
- all checks consistent
- File
- 19990517.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HK – 5 | 22 | 70W | 215 | 69W | 4 | |
| 2 | EAC – 21 | 20 | 48W | 193 | 47W | 12 | |
| 3 | CAO – 3 | 20 | 38W | 183 | 37W | 5 | |
| 4 | HH – 1 | 35 | 45E | 100 | 46E | 6 | |
| 5 | HS – 1 | -19 | 01W | 146 | 05W | 1 | |
| 6 | EAC – 12 | -21 | 26E | 119 | 27E | 13 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.