Daily Sunspot Evaluation
Observation Sheet Monday, 14 April 1969
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
- AT
- Reading
- all checks consistent
- File
- 19690414.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 14 | 18E | 106 | |||
| 2 | D – 21 | 19 | 37E | 84 | |||
| 3 | H – 4 | 22 | 62E | 62 | |||
| 4 | H – 9 | 9 | 35E | 89 | |||
| 5 | E – 18 | -4 | 10E | 114 | |||
| 6 | J – 1 | -16 | 60E | 64 | |||
| 7 | C – 7 | -15 | 0 | 124 | |||
| 8 | J – 1 | -19 | 64W | 188 | |||
| 9 | J – 2 | 8 | 74W | 198 | |||
| 10 | A – 1 | 15 | 54W | 178 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.