condition mean min max ZT0-3 0.328155875 0.23175375 0.424558 ZT4-7 0.42405899999999996 0.42405899999999996 0.42405899999999996 ZT8-11 10.363395 10.363395 10.363395 ZT12-15 0 0 0 ZT16-19 4.589255 4.589255 4.589255 ZT20-23 1.6655099999999998 1.6655099999999998 1.6655099999999998