condition mean min max ZT0-3 2400.2 2400.2 2400.2 ZT4-7 1993.4 1993.4 1993.4 ZT8-11 1869.9 1869.9 1869.9 ZT12-15 1541.85 1541.85 1541.85 ZT16-19 2196.1 2196.1 2196.1 ZT20-23 2721.0 2721.0 2721.0