condition mean min max ZT0-3 6034.25 6034.25 6034.25 ZT4-7 16841.1 16841.1 16841.1 ZT8-11 19900.6 19900.6 19900.6 ZT12-15 19865.1 19865.1 19865.1 ZT16-19 12121.45 12121.45 12121.45 ZT20-23 7881.05 7881.05 7881.05