Daily Sunspot Evaluation
Observation Sheet Sunday, 16 March 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)
- 13
- Number of spots (f)
- 96
- Relative number (R)
- 226
- Observer
- AT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19690316.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 11 | 13 | 15E | 130 | |||
| 2 | G – 11 | 15 | 43E | 102 | |||
| 3 | ? – 8 | 21 | 79E | 66 | |||
| 4 | E – 15 | 11 | 55E | 90 | |||
| 5 | J – 2 | 12 | 65E | 80 | |||
| 6 | J – 1 | -14 | 86E | 59 | |||
| 7 | B – 16 | -15 | 15E | 130 | |||
| 8 | A – 2 | -20 | 68E | 77 | |||
| 9 | A – 1 | -28 | 61E | 84 | |||
| 10 | A – 3 | -9 | 28W | 173 | |||
| 11 | A – 2 | 9 | 55W | 200 | |||
| 12 | A – 3 | 32 | 32W | 173 ⚠ | |||
| 13 | C – 21 | 23 | 03W | 148 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.