Daily Sunspot Evaluation
Observation Sheet Sunday, 16 June 1991
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)
- 11
- Number of spots (f)
- 81
- Relative number (R)
- 191
- Observer
- TA
- Reading
- all checks consistent
- File
- 19910616.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 5 | 33 | 82W | 238 | 82W | - | 291 |
| 2 | CAI – 12 | 8 | 69E | 87 | 69E | 10 | 302 |
| 3 | ? – 1 | -19 | 77W | 233 | 77W | 1.5 | 297 |
| 4 | CAO – 5 | -13 | 55W | 211 | 55W | 7 | 286 |
| 5 | CAO – 3 | -6 | 31W | 187 | 31W | 5.5 | 236 |
| 6 | AR – 4 | -15 | 11W | 167 | 11W | 2.5 | 305 |
| 7 | BRI – 10 | -22 | 08W | 164 | 08W | 8 | 295 |
| 8 | BRI – 3 | -13 | 05E | 151 | 05E | 4.5 | 306 |
| 9 | AR – 8 | -15 | 13E | 143 | 13E | 2.5 | 300 |
| 10 | CAI – 20 | -12 | 23E | 133 | 23E | 7 | 304 |
| 11 | BRI – 10 | -28 | 42E | 114 | 42E | 7.5 | 301 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.