condition mean min max ZT0-3 2081.45 2081.45 2081.45 ZT4-7 2358.6 2358.6 2358.6 ZT8-11 4172.45 4172.45 4172.45 ZT12-15 6576.55 6576.55 6576.55 ZT16-19 6366.799999999999 6366.799999999999 6366.799999999999 ZT20-23 3672.8 3672.8 3672.8