Daily Sunspot Evaluation
Observation Sheet Friday, 3 May 1991
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)
- 10
- Number of spots (f)
- 65
- Relative number (R)
- 165
- Observer
- HÇ0
- Reading
- all checks consistent
- File
- 19910503.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AR – 1 | 8 | 20W | 41 | 24W | 0.5 | 193 |
| 2 | DAI – 19 | 7 | 12W | 33 | 16W | 8.5 | 196 |
| 3 | AX – 2 | 12 | 06W | 27 | 10W | 1° | 205 |
| 4 | CAO – 3 | -28 | 64W | 85 | 68W | 8° | 200 |
| 5 | BXI – 8 | -25 | 39W | 60 | 45W | 7° | 206 |
| 6 | HS – 1 | -22 | 03W | 24 | 07W | 2° | 199 |
| 7 | AR – 1 | -5 | 06E | 15 | 02E | 0.5 | 202 |
| 8 | AX – 3 | -12 | 10E | 11 | 06E | 2.5 | 207 |
| 9 | BXI – 14 | -9 | 32E | 349 | 28E | 4.5 | 208 |
| 10 | CAI – 13 | -13 | 37E | 344 | 35E | 9.5 | 203 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.