Daily Sunspot Evaluation
Observation Sheet Sunday, 20 July 2003
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)
- 11
- Number of spots (f)
- 136
- Relative number (R)
- 246
- Observer
- HE
- Reading
- all checks consistent
- File
- 20030720.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 19 | 16 | 21W | 201 | 25W | 9 | 196 |
| 2 | DAI – 19 | 14 | 10W | 190 | 14W | ~7 | 198 |
| 3 | HR – 2 | 19 | 06E | 174 | 02E | 0.5 | 200 |
| 4 | HS – 2 | 14 | 11E | 169 | 07E | ~1 | 201 |
| 5 | DAO – 16 | 11 | 28E | 152 | 24E | 7 | 205 |
| 6 | HA – 2 | -10 | 46W | 226 | 50W | 7 | 191 |
| 7 | DAO – 5 | -9 | 30W | 210 | 34W | 4 | 206 |
| 8 | DRI – 22 | -22 | 24W | 204 | 28W | 7 | 207 |
| 9 | EKC – 45 | -12 | 15W | 195 | 19W | 11 | 197 |
| 10 | HA – 3 | -6 | 02E | 178 | 02W | 1.5 | 203 |
| 11 | HS – 1 | -3 | 42E | 138 | 38E | 2 | 202 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.