condition mean min max ZT0-3 1151.4499999999998 1151.4499999999998 1151.4499999999998 ZT4-7 910.8 910.8 910.8 ZT8-11 791.0 791.0 791.0 ZT12-15 949.0 949.0 949.0 ZT16-19 1090.2 1090.2 1090.2 ZT20-23 1029.25 1029.25 1029.25