Daily Sunspot Evaluation
Observation Sheet Friday, 29 June 1990
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)
- 15
- Number of spots (f)
- 161
- Relative number (R)
- 311
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19900629.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AR – 2 | 15 | 42W | 166 | 45W | 1.5 | 273 |
| 2 | AX – 1 | 24 | 31W | 155 | 34W | 275 | |
| 3 | HA – 1 | 27 | 19W | 143 | 22W | 2 | 262 |
| 4 | CAI – 23 | 5 | 10E | 114 | 07E | 7 | 269 |
| 5 | CAI – 10 | 11 | 28E | 96 | 25E | 5 | 279 |
| 6 | DKI – 26 | 8 | 45E | 79 | 42E | 9.5 | 276 |
| 7 | ? – 5 | 17 | 80E | 44 | 77E | 10 | 280 |
| 8 | BXO – 3 | -10 | 55W | 179 | 58W | 7 | 264 |
| 9 | CAO – 8 | -8 | 40W | 164 | 43W | 6.5 | 270 |
| 10 | AX – 1 | -18 | 13W | 137 | 16W | 265 | |
| 11 | FKI – 32 | -22 | 06E | 118 | 03E | 18 | 266 |
| 12 | CAI – 18 | -13 | 38E | 86 | 35E | 5 | 274 |
| 13 | EAC – 22 | -21 | 52E | 72 | 49E | 13.5 | 279 |
| 14 | AX – 1 | -15 | 60E | 64 | 57E | 281 | |
| 15 | ? – 8 | -28 | 73E | 51 | 70E | 13 | 278 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.