Daily Sunspot Evaluation
Observation Sheet Wednesday, 19 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)
- 9
- Number of spots (f)
- 46
- Relative number (R)
- 136
- Observer
- HE
- Reading
- all checks consistent
- File
- 19910619.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSO – 5 | 8 | 27E | 91 | 25E | 6 | 302 |
| 2 | AX – 3 | 16 | 34E | 84 | 32E | 2 | 313 |
| 3 | HH – 1 | 22 | 68E | 50 | 66E | 2 | 310 |
| 4 | HA – 1 | -5 | 73W | 191 | 75W | 1 | 296 |
| 5 | BRO – 3 | -15 | 27W | 145 | 29W | 3.5 | 300 |
| 6 | DAC – 21 | -12 | 14W | 132 | 16W | 8 | 304 |
| 7 | BRI – 6 | -29 | 05E | 113 | 03E | 8 | 305 |
| 8 | AX – 1 | -28 | 53E | 65 | 51E | - | 312 |
| 9 | CAO – 5 | -16 | 63E | 55 | 61E | 6.5 | 314 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.