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 | S10 | E24 | 15 | 0200 | Beta | Apr 2, 2001 | Apr 9, 2001 | Apr 22, 2001 |
| № 9407 | N13 | E54 | 02 | 0110 | Beta | Apr 4, 2001 | Apr 11, 2001 | Apr 25, 2001 |
| № 9406 | N26 | E52 | 01 | 0160 | Alpha | Apr 4, 2001 | Apr 11, 2001 | Apr 25, 2001 |
| № 9405 | S13 | W34 | 03 | 0010 | Alpha | Mar 28, 2001 | Apr 4, 2001 | Apr 18, 2001 |
| № 9404 | S05 | E36 | 01 | 0070 | Alpha | Apr 3, 2001 | Apr 9, 2001 | Apr 23, 2001 |
| № 9403 | S13 | E20 | 03 | 0010 | Beta | Apr 2, 2001 | Apr 8, 2001 | Apr 22, 2001 |
| № 9402 | N18 | W47 | 01 | 0010 | Alpha | Mar 27, 2001 | Apr 3, 2001 | Apr 17, 2001 |
| № 9401 | N21 | E03 | 18 | 0210 | Beta | Mar 31, 2001 | Apr 7, 2001 | Apr 21, 2001 |
| № 9400 | N10 | W44 | 01 | 0000 | Alpha | Mar 28, 2001 | Apr 3, 2001 | Apr 17, 2001 |
| № 9399 | S31 | W60 | 01 | 0000 | Alpha | Mar 26, 2001 | Apr 2, 2001 | Apr 17, 2001 |
| № 9397 | S09 | E06 | 13 | 0220 | Beta-Gamma | Mar 31, 2001 | Apr 7, 2001 | Apr 21, 2001 |
| № 9396 | S06 | W72 | 07 | 0240 | Beta | Mar 26, 2001 | Apr 1, 2001 | Apr 15, 2001 |
| № 9395 | S13 | W06 | 01 | 0050 | Alpha | Mar 31, 2001 | Apr 6, 2001 | Apr 20, 2001 |
| № 9394 | N08 | W20 | 01 | 0000 | Alpha | Mar 29, 2001 | Apr 5, 2001 | Apr 19, 2001 |
| № 9393 | N17 | W18 | 51 | 2440 | Beta-Gamma-Delta | Mar 30, 2001 | Apr 5, 2001 | Apr 19, 2001 |
| № 9390 | N14 | W50 | 03 | 0050 | Beta | Mar 27, 2001 | Apr 3, 2001 | Apr 17, 2001 |
| № 9389 | S12 | W50 | 12 | 0050 | Beta-Gamma | Mar 27, 2001 | Apr 3, 2001 | Apr 17, 2001 |
| № 9387 | N08 | W80 | 01 | 0110 | Alpha | 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.
