condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01932734225 0.0 0.0386546845 ZT8-11 0.0 0.0 0.0 ZT12-15 0.01251804175 0.0 0.0250360835 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0338373805 0.031228324 0.036446437000000005