condition mean min max ZT0-3 1179.540097 1179.540097 1179.540097 ZT4-7 993.2183475 993.2183475 993.2183475 ZT8-11 1031.3830950000001 1031.3830950000001 1031.3830950000001 ZT12-15 1092.6706020000001 1092.6706020000001 1092.6706020000001 ZT16-19 1028.9335105 1028.9335105 1028.9335105 ZT20-23 1089.8621914999999 1089.8621914999999 1089.8621914999999