condition mean min max ZT0-3 1385.93654 1385.93654 1385.93654 ZT4-7 437.3207895 437.3207895 437.3207895 ZT8-11 329.0517045 329.0517045 329.0517045 ZT12-15 498.05390050000005 498.05390050000005 498.05390050000005 ZT16-19 1151.6610045 1151.6610045 1151.6610045 ZT20-23 1183.1294045 1183.1294045 1183.1294045