condition mean min max ZT0-3 2851.8999999999996 2851.8999999999996 2851.8999999999996 ZT4-7 2940.3 2940.3 2940.3 ZT8-11 3200.95 3200.95 3200.95 ZT12-15 2762.6 2762.6 2762.6 ZT16-19 2749.55 2749.55 2749.55 ZT20-23 2952.7 2952.7 2952.7