condition mean min max ZT0-3 501.47450000000003 501.47450000000003 501.47450000000003 ZT4-7 476.076 476.076 476.076 ZT8-11 378.144 378.144 378.144 ZT12-15 236.5645 236.5645 236.5645 ZT16-19 295.043 295.043 295.043 ZT20-23 427.76099999999997 427.76099999999997 427.76099999999997