Daily Sunspot Evaluation
Observation Sheet Saturday, 15 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)
- 12
- Number of spots (f)
- 70
- Relative number (R)
- 190
- Observer
- HE
- Reading
- all checks consistent
- File
- 19910615.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 13 | 33 | 70W | 242 | 73W | 13 | 271 |
| 2 | CAO – 9 | 11 | 38W | 210 | 41W | 5 | 299 |
| 3 | ? – 3 | 7 | 84E | 88 | 81E | 7 | 302 |
| 4 | EAO – 3 | -13 | 74W | 246 | 77W | 12 | 281 |
| 5 | HA – 2 | -19 | 62W | 234 | 65W | 2 | 294 |
| 6 | CAI – 9 | -13 | 39W | 211 | 42W | 6.5 | 286 |
| 7 | BXO – 2 | -18 | 23W | 195 | 26W | 3 | 303 |
| 8 | CSO – 8 | -6 | 15W | 187 | 18W | 6.5 | 296 |
| 9 | DAO – 9 | -22 | 08E | 164 | 05E | 7.5 | 295 |
| 10 | CAI – 4 | -14 | 23E | 149 | 20E | 8 | 300 |
| 11 | AX – 3 | -13 | 38E | 134 | 35E | 1 | 304 |
| 12 | AX – 5 | -28 | 53E | 119 | 50E | 2.5 | 301 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.