condition mean min max ZT0-3 2265.05 2265.05 2265.05 ZT4-7 1810.4 1810.4 1810.4 ZT8-11 1884.1 1884.1 1884.1 ZT12-15 1605.3000000000002 1605.3000000000002 1605.3000000000002 ZT16-19 2052.25 2052.25 2052.25 ZT20-23 2158.95 2158.95 2158.95