Daily Sunspot Evaluation
Observation Sheet Friday, 18 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)
- 93
- Relative number (R)
- 203
- Observer
- HE
- Reading
- all checks consistent
- File
- 20030718.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 1 | 13 | 35W | 239 | 28W | 0.5 | 195 |
| 2 | EAI – 30 | 15 | 03E | 201 | 00 | 11 | 196 |
| 3 | EAI – 27 | 15 | 15E | 189 | 12E | 11 | 198 |
| 4 | HA – 1 | 18 | 31E | 173 | 28E | 0.5 | 200 |
| 5 | HS – 1 | 14 | 35E | 169 | 32E | 2 | 201 |
| 6 | AX – 1 | 1 | 44E | 160 | 41E | - | 204 |
| 7 | HR – 1 | 11 | 51E | 153 | 48E | 0.5 | 205 |
| 8 | CSO – 2 | -10 | 18W | 222 | 21W | 6.5 | 191 |
| 9 | DAI – 25 | -12 | 08E | 196 | 05E | ~9 | 197 |
| 10 | AX – 2 | -7 | 31E | 173 | 28E | 2 | 203 |
| 11 | HS – 2 | -3 | 67E | 137 | 64E | 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.