Daily Sunspot Evaluation
Observation Sheet Sunday, 2 August 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)
- 3
- Number of spots (f)
- 22
- Relative number (R)
- 52
- Observer
- HG
- Reading
- counts consistent, some coordinates doubtful
- File
- 19870802.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 2 | 29 | 42W | 146 ⚠ | 49W | 1 55 | 47 |
| 2 | CHI – 16 | 16 | 22W | 120 | 23W | 8 59 | 51 |
| 3 | DAI – 4 | -23 | 54E | 44 | 53E | 6 60 | 52 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.