condition mean min max ZT0-3 1064.05 1064.05 1064.05 ZT4-7 2720.0 2720.0 2720.0 ZT8-11 3826.3999999999996 3826.3999999999996 3826.3999999999996 ZT12-15 2346.5 2346.5 2346.5 ZT16-19 1000.4000000000001 1000.4000000000001 1000.4000000000001 ZT20-23 1148.4 1148.4 1148.4