Figure 47:

Sunspot group size (area) distributions for cycles 22 and 23. The maximum sizes attained by active regions in the USAF database are used to count each active region in a size bin for its respective cycle. On the left, the bins extend from 10 to 200 µHem in 10 µHem increments. On the right, the bins extend from 100 to 2000 µHem in 100 µHem increments. The deficit of small spots (with areas of 10 and 20 µHem) in cycle 23 appears to be significant. Cycle 23 also appears to have fewer large active regions. While those deviations are well within the 1σ errors, there are consistently fewer numbers in all area bins above ∼ 700 µHem.