condition mean min max ZT0-3 0.011594916666666668 0.0 0.03478475 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.019817925 0.0 0.03963585 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0