condition mean min max ZT0-3 32.9403 27.0308 38.8498 ZT4-7 58.90975 58.90975 58.90975 ZT8-11 25.9919 25.9919 25.9919 ZT12-15 0 0 0 ZT16-19 29.526400000000002 29.526400000000002 29.526400000000002 ZT20-23 82.5857 82.5857 82.5857