condition mean min max ZT0-3 1461.95 1461.95 1461.95 ZT4-7 3549.5 3549.5 3549.5 ZT8-11 3987.95 3987.95 3987.95 ZT12-15 4103.049999999999 4103.049999999999 4103.049999999999 ZT16-19 3078.45 3078.45 3078.45 ZT20-23 2338.7 2338.7 2338.7