condition mean min max ZT0-3 62.933082 62.933082 62.933082 ZT4-7 107.59625299999999 107.59625299999999 107.59625299999999 ZT8-11 121.26369350000002 121.26369350000002 121.26369350000002 ZT12-15 99.35739000000001 99.35739000000001 99.35739000000001 ZT16-19 94.8086385 94.8086385 94.8086385 ZT20-23 98.036674 98.036674 98.036674