condition mean min max ZT0-3 2509.85 2509.85 2509.85 ZT4-7 1201.1 1201.1 1201.1 ZT8-11 1056.6999999999998 1056.6999999999998 1056.6999999999998 ZT12-15 724.2 724.2 724.2 ZT16-19 910.3 910.3 910.3 ZT20-23 1615.0 1615.0 1615.0