condition mean min max ZT0-3 144.55700000000002 124.459 182.4975 ZT4-7 90.668 90.668 90.668 ZT8-11 43.790800000000004 43.790800000000004 43.790800000000004 ZT12-15 51.48345 48.845349999999996 54.12155 ZT16-19 78.0951 78.0951 78.0951 ZT20-23 124.28305 124.28305 124.28305