Daily Sunspot Evaluation
Observation Sheet Thursday, 22 September 1988
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)
- 13
- Number of spots (f)
- 90
- Relative number (R)
- 220
- Observer
- HE
- Reading
- counts consistent, some coordinates doubtful
- File
- 19880922.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BHO – 4 | 19 | 26W | 21 | 29W | 5.25 | 244+6 |
| 2 | BRI – 10 | 20 | 16W | 11 | 19W | 4 | 242 |
| 3 | BHO – 4 | 33 | 03E | 352 | 00E | 3 | 238 |
| 4 | AH – 1 | 20 | 28E | 327 | 25E | - | 249+7 |
| 5 | AH – 3 | 23 | 37E | 318 | 34E | 1.5 | 239 |
| 6 | DKC – 13 | 28 | 40E | 315 | 37E | 8 | 237 |
| 7 | CAI – 13 | 22 | 56E | 299 | 53E | 10.5 | 240 |
| 8 | AH – 2 | -18 | 21W | 16 | 24W | 2.5 | 245+8 |
| 9 | DKI – 21 | -16 | 03E | 352 | 00E | 7.5 | 230 |
| 10 | HK – 1 | -37 | 10E | 345 | 07E | 3.5 | 232 |
| 11 | BHI – 15 | -37 | 20E | 335 | 17E | 9.5 | 236 |
| 12 | AR – 2 | -39 | 29E | 316 ⚠ | 36E | 1 | 241 |
| 13 | HK – 1 | -12 | 67W | 62 | 70W | 3 | 223 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.