Daily Sunspot Evaluation
Observation Sheet Wednesday, 22 July 1987
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)
- 6
- Number of spots (f)
- 59
- Relative number (R)
- 119
- Observer
- TS
- Reading
- counts consistent, some coordinates doubtful
- File
- 19870722.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 8 | 21 | 08W | 253 | 10W | 4.5 | 43 |
| 2 | CAI – 18 | -28 | 10W | 255 | 12W | 8.5 | 42 |
| 3 | HAX – 6 | -31 | 03E | 224 ⚠ | 01E | 4.4 | 41 |
| 4 | AXX – 9 | -18 | 20E | 225 | 18E | 4.5 | 45 |
| 5 | AXX – 2 | -19 | 49E | 196 | 47E | 1.5 | 46 |
| 6 | DAI – 16 | -23 | 62E | 183 | 60E | 9.5 | 44 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.