Daily Sunspot Evaluation
Observation Sheet Monday, 11 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)
- 4
- Number of spots (f)
- 51
- Relative number (R)
- 91
- Observer
- HE
- Reading
- all checks consistent
- File
- 19880711.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAC – 20 | 23 | 16W | 256 | 28W | 12 | 137 |
| 2 | CAI – 11 | 28 | 20E | 220 | 17E | 7.5 | 142 |
| 3 | EAC – 19 | 24 | 29E | 211 | 26E | 10.5 | 138 |
| 4 | ? – 1 | -16 | 82E | 158 | 79E | 4 | 143 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.