Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 May 1972
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)
- 8
- Number of spots (f)
- 115
- Relative number (R)
- 195
- Observer
- FA
- Reading
- all checks consistent
- File
- 19720516.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 11 | 34E | 321 | |||
| 2 | H – 1 | 14 | 57E | 298 | |||
| 3 | J – 1 | 8 | 46E | 309 | |||
| 4 | E – 39 | -4 | 26E | 329 | |||
| 5 | E – 16 | -13 | 57E | 298 | |||
| 6 | J – 1 | -9 | 34E | 321 | |||
| 7 | E – 50 | -7 | 14W | 9 | |||
| 8 | B – 5 | 13 | 11W | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.