condition mean min max ZT0-3 891.596 891.596 891.596 ZT4-7 943.848 943.848 943.848 ZT8-11 1138.4250000000002 1138.4250000000002 1138.4250000000002 ZT12-15 1296.005 1296.005 1296.005 ZT16-19 883.3689999999999 883.3689999999999 883.3689999999999 ZT20-23 938.8389999999999 938.8389999999999 938.8389999999999