Daily Sunspot Evaluation
Observation Sheet Friday, 18 May 1984
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)
- 4
- Number of spots (f)
- 41
- Relative number (R)
- 81
- Observer
- HM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19840518.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 22 | 8 | 13W | 152 ⚠ | 76W | 20 35 | 91 |
| 2 | CAI – 11 | -13 | 10W | 89 | 13W | 6 6 | 90 |
| 3 | CAI – 6 | -14 | 28E | 51 | 25E | 4.5 4 | 91 |
| 4 | CAO – 2 | -11 | 77E | 2 | 74E | 8 1 | 94 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.