condition mean min max ZT0-3 2840.9 2840.9 2840.9 ZT4-7 2417.5 2417.5 2417.5 ZT8-11 2418.3 2418.3 2418.3 ZT12-15 2345.0 2345.0 2345.0 ZT16-19 2647.45 2647.45 2647.45 ZT20-23 2803.8999999999996 2803.8999999999996 2803.8999999999996