Daily Sunspot Evaluation
Observation Sheet Sunday, 27 May 1973
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)
- 21
- Relative number (R)
- 71
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730527.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 3 | 13 | 26°E | 45 | 33 | ||
| 2 | B – 4 | -5 | 15°W | 86 | 94 | ||
| 3 | J – 1 | -10 | 44°W | 115 | 38 | ||
| 4 | D – 12 | -1 | 29°W | 100 | 37 | ||
| 5 | J – 1 | 11 | 29°W | 150 | 82 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.