condition mean min max ZT0-3 189.92180000000002 88.78435 383.37850000000003 ZT4-7 124.46650000000001 124.46650000000001 124.46650000000001 ZT8-11 105.8196 105.8196 105.8196 ZT12-15 132.693425 64.98785000000001 200.399 ZT16-19 37.22265 37.22265 37.22265 ZT20-23 35.07315 35.07315 35.07315