Daily Sunspot Evaluation
Observation Sheet Friday, 30 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)
- 13
- Number of spots (f)
- 110
- Relative number (R)
- 240
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19990730.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 3 | 21 | 82W | 331 | 84W | ? | |
| 2 | CRI – 4 | 29 | 49W | 298 | 51W | 6 | |
| 3 | HA – 2 | 13 | 49W | 298 | 51W | 1 | |
| 4 | HS – 1 | 17 | 45W | 294 | 47W | 2.5 | |
| 5 | AX – 2 | 22 | 25E | 224 | 23E | 2 | |
| 6 | EXC – 28 | 24 | 45E | 204 | 43E | 11 | |
| 7 | CSI – 3 | 18 | 49E | 200 | 47E | 7 | CSD-3 |
| 8 | DAI – 23 | -15 | 21W | 270 | 23W | ~10 | |
| 9 | HA – 2 | -24 | 13W | 262 | 15W | 1.5 | |
| 10 | CAI – 8 | -20 | 03E | 246 | 01E | 6 | |
| 11 | DKI – 15 | -25 | 03E | 246 | 02E | ~9 | |
| 12 | DKC – 9 | -29 | 14E | 235 | 12E | ~5 | |
| 13 | ERI – 10 | -17 | 07E | 242 | 05E | ~11 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.