Daily Sunspot Evaluation
Observation Sheet Monday, 18 July 1983
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)
- 10
- Number of spots (f)
- 36
- Relative number (R)
- 136
- Observer
- AÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19830718.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 12 | 75W | 216 | 77W | 3 | 183 |
| 2 | DAO – 3 | 17 | 23W | 164 | 25W | 10 | 149 |
| 3 | CAI – 11 | 11 | 15E | 126 | 13E | 4 | 197 |
| 4 | HAX – 1 | 15 | 33E | 108 | 31E | 1 | 201 |
| 5 | HAX – 1 | -18 | 76W | 217 | 78W | 3 | 188 |
| 6 | AXX – 1 | -5 | 62W | 203 | 64W | 1 | 203 |
| 7 | DAO – 3 | -9 | 28W | 169 | 30W | 4 | 204 |
| 8 | CAI – 10 | -14 | 18W | 159 | 20W | 194 | |
| 9 | AXX – 2 | 141 | 02W | ⚠ | 202 | ||
| 10 | CAO – 3 | -6 | 10E | 131 | 08E | 375 | 205 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.