Daily Sunspot Evaluation
Observation Sheet Wednesday, 13 July 1988
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)
- 5
- Number of spots (f)
- 28
- Relative number (R)
- 78
- Observer
- HE
- Reading
- all checks consistent
- File
- 19880713.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAO – 4 | 28 | 42W | 256 | 45W | 12 | 137 |
| 2 | DAC – 8 | 27 | 06W | 220 | 9W | 9 | 142 |
| 3 | EAC – 7 | 24 | 02E | 212 | 01W | 10 | 138 |
| 4 | HA – 1 | -16 | 53E | 161 | 50E | 2 | 143 |
| 5 | DKC – 8 | -22 | 64E | 150 | 61E | 12 | 144 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.