Daily Sunspot Evaluation
Observation Sheet Friday, 28 March 1958
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)
- 14
- Number of spots (f)
- 177
- Relative number (R)
- 317
- Observer
- FY
- Reading
- all checks consistent
- File
- 19580328.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 25 | 67E | ||||
| 2 | D – 23 | -6 | 10E | ||||
| 3 | ? – 1 | -14 | 82E | ||||
| 4 | E – 15 | -16 | 64E | ||||
| 5 | F – 34 | -21 | 26E | ||||
| 6 | F – 42 | -12 | 8E | ||||
| 7 | C – 31 | -5 | 13W | ||||
| 8 | J – 2 | 10 | 66W | ||||
| 9 | ? – 1 | 24 | 84W | ||||
| 10 | ? – 1 | 25 | 68W | ||||
| 11 | H – 9 | 26 | 57W | ||||
| 12 | C – 4 | 25 | 40W | ||||
| 13 | H – 2 | 20 | 19W | ||||
| 14 | C – 11 | 20 | 1W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.