condition mean min max ZT0-3 957.45 957.45 957.45 ZT4-7 1165.7 1165.7 1165.7 ZT8-11 1096.45 1096.45 1096.45 ZT12-15 981.95 981.95 981.95 ZT16-19 879.2 879.2 879.2 ZT20-23 830.05 830.05 830.05