Daily Sunspot Evaluation
Observation Sheet Tuesday, 18 July 2000
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)
- 210
- Relative number (R)
- 340
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20000718.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 37 | 17 | 50W | 307 | 52W | 13 | |
| 2 | DAI – 15 | 20 | 30W | 287 | 32W | 8 | |
| 3 | EKC – 21 | 20 | 14W | 271 | 16W | 12 | |
| 4 | EKI – 24 | 13 | 03E | 254 | 01E | 12 | |
| 5 | DAI – 11 | 22 | 09E | 248 | 07E | ~5 | |
| 6 | HS – 1 | 3 | 12W | 269 | 14W | ~2 | |
| 7 | FKC – 24 | 12 | 58E | 199 | 56E | ~22 | |
| 8 | DAO – 8 | -12 | 51W | 308 | 53W | 9 | |
| 9 | HS – 1 | -27 | 40W | 297 | 42W | 2 | |
| 10 | DSO – 7 | -27 | 16W | 273 | 18W | ~5 | |
| 11 | FKC – 56 | -11 | 24E | 233 | 22E | 15 | |
| 12 | HA – 4 | -7 | 54E | 203 | 52E | ~2 | |
| 13 | HS – 1 | -24 | 62E | 195 | 60E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.