condition mean min max ZT0-3 1708.3000000000002 1708.3000000000002 1708.3000000000002 ZT4-7 2311.9 2311.9 2311.9 ZT8-11 2144.1 2144.1 2144.1 ZT12-15 2511.55 2511.55 2511.55 ZT16-19 1722.05 1722.05 1722.05 ZT20-23 1489.5 1489.5 1489.5