condition mean min max ZT0-3 40.698899999999995 34.65 46.7478 ZT4-7 53.69235 53.69235 53.69235 ZT8-11 80.018 80.018 80.018 ZT12-15 0 0 0 ZT16-19 101.24185 101.24185 101.24185 ZT20-23 74.18405 74.18405 74.18405