Daily Sunspot Evaluation
Observation Sheet Sunday, 13 May 1984
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)
- 100
- Relative number (R)
- 150
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19840513.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HSX – 2 | 1 | 21W | 165 | 23W | 1 | 1) |
| 2 | FKC – 80 | 6 | 09W | 153 | 11W | 20.75 | 2) |
| 3 | BXO – 2 | 16 | 08W | 152 | 10W | 2.5 | 4) |
| 4 | HSX – 1 | -7 | 49W | 193 | 51W | 1.25 | 3) |
| 5 | DAI – 15 | -12 | 05W | 149 | 07W | 4.75 | 9) |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.