condition mean min max ZT0-3 1231.5 1231.5 1231.5 ZT4-7 1196.2 1196.2 1196.2 ZT8-11 979.7 979.7 979.7 ZT12-15 1149.45 1149.45 1149.45 ZT16-19 1378.95 1378.95 1378.95 ZT20-23 1361.5 1361.5 1361.5