Daily Sunspot Evaluation
Observation Sheet Friday, 1 April 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)
- 84
- Relative number (R)
- 134
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19880401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 3 | 41 | 69W | 206 | 73W | 4 | 62 |
| 2 | EAO – 53 | 19 | 22W | 159 | 26W | 13 | 56 |
| 3 | HA – 3 | -33 | 56W | 193 | 60W | 6 | 35 |
| 4 | CAO – 12 | -21 | 16W | 153 | 20W | 7.5 | 60 |
| 5 | CAI – 13 | -22 | 05E | 132 | 01E | 11 | 59 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.