condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.025177 0.025177 0.025177 ZT12-15 0.13062325 0.07679849999999999 0.184448 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0