condition mean min max ZT0-3 1447.65 1447.65 1447.65 ZT4-7 913.8 913.8 913.8 ZT8-11 1096.95 1096.95 1096.95 ZT12-15 1000.2 1000.2 1000.2 ZT16-19 1219.85 1219.85 1219.85 ZT20-23 1539.5 1539.5 1539.5