condition mean min max ZT0-3 943.5 943.5 943.5 ZT4-7 917.3 917.3 917.3 ZT8-11 797.6 797.6 797.6 ZT12-15 786.6500000000001 786.6500000000001 786.6500000000001 ZT16-19 929.15 929.15 929.15 ZT20-23 1107.9 1107.9 1107.9