Daily Sunspot Evaluation
Observation Sheet Thursday, 16 April 1992
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)
- 53
- Relative number (R)
- 123
- Observer
- NA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19920416.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 8 | 6 | 02E | 53 ⚠ | 01W | 11.5 | 162 |
| 2 | BXO – 3 | 1 | 60E | 35 | 57E | 4 | 164 |
| 3 | HS – 1 | -16 | 56W | 151 | 53W | 4 | 156 |
| 4 | CKI – 13 | -16 | 11W | 106 | 14W | 10 | 153 |
| 5 | AX – 1 | -10 | 01E | 84 ⚠ | 02W | - | 166 |
| 6 | CRO – 5 | -19 | 10E | 85 | 07E | 5.5 | 165 |
| 7 | FAC – 22 | -27 | 51E | 44 | 48E | 16.5 | 161 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.