condition mean min max ZT0-3 1.37885 1.226275 1.531425 ZT4-7 1.496155 1.496155 1.496155 ZT8-11 1.320474 1.320474 1.320474 ZT12-15 0 0 0 ZT16-19 2.411035 2.411035 2.411035 ZT20-23 2.574235 2.574235 2.574235