condition mean min max ZT0-3 2609.6499999999996 2609.6499999999996 2609.6499999999996 ZT4-7 1978.8 1978.8 1978.8 ZT8-11 1893.4 1893.4 1893.4 ZT12-15 1970.2 1970.2 1970.2 ZT16-19 2285.35 2285.35 2285.35 ZT20-23 2565.7 2565.7 2565.7