Daily Sunspot Evaluation
Observation Sheet Friday, 23 July 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)
- 56
- Relative number (R)
- 136
- Observer
- SB0
- Reading
- all checks consistent
- File
- 19990723.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BA – 2 | 19 | 66W | 48 | 69W | 5 | Cr0-2 |
| 2 | DKO – 7 | 38 | 54W | 36 | 57W | 9 | Dkc-7 |
| 3 | HA – 1 | 13 | 02W | 344 | 05W | ~1 | |
| 4 | FKC – 37 | 20 | 09E | 333 | 06E | 19 | |
| 5 | AX – 2 | 23 | 26E | 316 | 23E | ~2.5 | |
| 6 | HA – 1 | 19 | 44E | 298 | 41E | ~1.5 | Hs-1 |
| 7 | HA – 5 | -18 | 46E | 296 | 43E | 2 | |
| 8 | ? – 1 | -24 | 75E | 267 | 72E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.