condition mean min max ZT0-3 13.51807895325 3.8929193210000004 23.1432385855 ZT4-7 149.29442566 114.48976252000001 184.0990888 ZT8-11 267.489130325 237.2935966 297.68466405 ZT12-15 316.87296979999996 272.66414635 361.08179325 ZT16-19 172.51771225000002 149.1961793 195.83924520000002 ZT20-23 85.2313504675 67.620866515 102.84183442