condition mean min max ZT0-3 0.3264725 0.0 0.652945 ZT4-7 0.666195 0.666195 0.666195 ZT8-11 0.66555 0.66555 0.66555 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0