condition mean min max ZT0-3 3008.3999999999996 3008.3999999999996 3008.3999999999996 ZT4-7 3010.0 3010.0 3010.0 ZT8-11 2337.55 2337.55 2337.55 ZT12-15 2444.0 2444.0 2444.0 ZT16-19 2785.8 2785.8 2785.8 ZT20-23 2984.4 2984.4 2984.4