Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 9408 | S08 | E38 | 13 | 0090 | Beta | Apr 2, 2001 | Apr 9, 2001 | Apr 22, 2001 |
| № 9407 | N11 | E64 | 01 | 0080 | Alpha | Apr 4, 2001 | Apr 11, 2001 | Apr 24, 2001 |
| № 9406 | N25 | E67 | 01 | 0150 | Alpha | Apr 4, 2001 | Apr 11, 2001 | Apr 25, 2001 |
| № 9405 | S13 | W20 | 14 | 0040 | Beta | Mar 28, 2001 | Apr 4, 2001 | Apr 18, 2001 |
| № 9404 | S05 | E50 | 01 | 0070 | Alpha | Apr 3, 2001 | Apr 10, 2001 | Apr 23, 2001 |
| № 9403 | S13 | E36 | 05 | 0020 | Beta | Apr 2, 2001 | Apr 9, 2001 | Apr 22, 2001 |
| № 9402 | N18 | W25 | 03 | 0010 | Alpha | Mar 28, 2001 | Apr 4, 2001 | Apr 18, 2001 |
| № 9401 | N22 | E17 | 20 | 0160 | Beta | Mar 31, 2001 | Apr 7, 2001 | Apr 21, 2001 |
| № 9400 | N10 | W29 | 01 | 0000 | Alpha | Mar 28, 2001 | Apr 4, 2001 | Apr 17, 2001 |
| № 9399 | S30 | W49 | 03 | 0030 | Beta | Mar 26, 2001 | Apr 2, 2001 | Apr 16, 2001 |
| № 9397 | S09 | E19 | 17 | 0260 | Beta-Gamma | Mar 31, 2001 | Apr 7, 2001 | Apr 21, 2001 |
| № 9396 | S06 | W59 | 12 | 0330 | Beta-Gamma | Mar 26, 2001 | Apr 1, 2001 | Apr 15, 2001 |
| № 9395 | S13 | E08 | 04 | 0060 | Beta | Mar 31, 2001 | Apr 6, 2001 | Apr 20, 2001 |
| № 9394 | N09 | W05 | 01 | 0010 | Alpha | Mar 30, 2001 | Apr 5, 2001 | Apr 19, 2001 |
| № 9393 | N13 | W00 | 51 | 2240 | Beta-Gamma-Delta | Mar 30, 2001 | Apr 6, 2001 | Apr 19, 2001 |
| № 9390 | N13 | W38 | 08 | 0080 | Beta | Mar 27, 2001 | Apr 3, 2001 | Apr 17, 2001 |
| № 9389 | S12 | W34 | 13 | 0050 | Beta | Mar 27, 2001 | Apr 3, 2001 | Apr 17, 2001 |
| № 9387 | N08 | W66 | 04 | 0150 | Beta | Mar 25, 2001 | Apr 1, 2001 | Apr 14, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, March. Gray background - average solar cycle.
