condition mean min max ZT0-3 0.1386325 0.0 0.277265 ZT4-7 0.6919465 0.6919465 0.6919465 ZT8-11 0.4110995 0.4110995 0.4110995 ZT12-15 0 0 0 ZT16-19 0.136033 0.136033 0.136033 ZT20-23 0.0 0.0 0.0