Daily Sunspot Evaluation
Observation Sheet Tuesday, 27 May 1980
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)
- 13
- Number of spots (f)
- 155
- Relative number (R)
- 285
- Observer
- HM
- Reading
- all checks consistent
- File
- 19800527.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSI – 15 | 16 | 54W | 219 | 59W | 12.5 | |
| 2 | EKI – 30 | 10 | 12E | 151 | 09E | 13 | |
| 3 | AXX – 4 | 17 | 50E | 113 | 47E | 2 | |
| 4 | HXX – 1 | 11 | 56E | 107 | 53E | 2.5 | |
| 5 | AXX – 3 | -20 | 40W | 203 | 43W | 1 | |
| 6 | AXX – 1 | -25 | 38W | 201 | 41W | - | |
| 7 | DKO – 5 | -8 | 24W | 187 | 27W | 12 | |
| 8 | FKC – 30 | -12 | 14W | 177 | 17W | 13 | |
| 9 | EKI – 27 | -19 | 12W | 175 | 15W | 10E | |
| 10 | BXI – 6 | -22 | 05E | 158 | 02E | 5 | |
| 11 | CAE – 12 | -15 | 08E | 155 | 05E | 5 | |
| 12 | EKI – 20 | -11 | 52E | 111 | 49E | 12 | |
| 13 | AXX – 1 | -31 | 70E | 93 | 67E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.