condition mean min max ZT0-3 1908.35 1908.35 1908.35 ZT4-7 2340.9 2340.9 2340.9 ZT8-11 2265.7 2265.7 2265.7 ZT12-15 2432.6000000000004 2432.6000000000004 2432.6000000000004 ZT16-19 2484.3 2484.3 2484.3 ZT20-23 1953.65 1953.65 1953.65