condition mean min max ZT0-3 24.013199999999998 23.4494 24.576999999999998 ZT4-7 30.66705 30.66705 30.66705 ZT8-11 40.925250000000005 40.925250000000005 40.925250000000005 ZT12-15 0 0 0 ZT16-19 47.1421 47.1421 47.1421 ZT20-23 36.85775 36.85775 36.85775