condition mean min max ZT0-3 495.9285 495.9285 495.9285 ZT4-7 356.5615 356.5615 356.5615 ZT8-11 321.60249999999996 321.60249999999996 321.60249999999996 ZT12-15 378.99 378.99 378.99 ZT16-19 578.5830000000001 578.5830000000001 578.5830000000001 ZT20-23 610.56 610.56 610.56