Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 May 1990
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)
- 7
- Number of spots (f)
- 145
- Relative number (R)
- 215
- Observer
- MB
- Reading
- all checks consistent
- File
- 19900523.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 20 | 35 | 60W | 314 | 63W | 44 | 202 |
| 2 | CAI – 11 | 18 | 15W | 269 | 18W | 4.5 | 217 |
| 3 | BRI – 27 | 8 | 13W | 267 | 16W | 11 | 207 |
| 4 | HA – 3 | 26 | 31E | 223 | 28E | 2 | 213 |
| 5 | FKC – 36 | -16 | 56W | 310 | 59W | 18 | 205 |
| 6 | EKI – 33 | -20 | 12E | 242 | 09E | 10.5 | 210 |
| 7 | DAI – 15 | -13 | 19E | 235 | 16E | 10.5 | 216 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.