condition mean min max ZT0-3 55.686724999999996 51.8324 59.54105 ZT4-7 65.4819 65.4819 65.4819 ZT8-11 81.22265 81.22265 81.22265 ZT12-15 0 0 0 ZT16-19 106.7096 106.7096 106.7096 ZT20-23 87.78835000000001 87.78835000000001 87.78835000000001