Daily Sunspot Evaluation
Observation Sheet Monday, 20 June 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)
- 18
- Relative number (R)
- 58
- Observer
- HM
- Reading
- all checks consistent
- File
- 19880620.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 4 | 129 | |||||
| 2 | HA – 1 | 38 | 08E | 147 | 09E | 2.5 | 123 |
| 3 | DKI – 12 | -16 | 03E | 152 | 04E | 9. | 122 |
| 4 | HA – 1 | -21 | 58E | 97 | 59E | 1.5 | 126 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.