condition mean min max ZT0-3 0.42035500000000003 0.42035500000000003 0.42035500000000003 ZT4-7 0.4759105 0.4759105 0.4759105 ZT8-11 0.2665985 0.2665985 0.2665985 ZT12-15 0.4656705 0.4656705 0.4656705 ZT16-19 0.6431225 0.6431225 0.6431225 ZT20-23 0.5243935 0.5243935 0.5243935