condition mean min max ZT0-3 1186.5 1186.5 1186.5 ZT4-7 1150.0 1150.0 1150.0 ZT8-11 1059.75 1059.75 1059.75 ZT12-15 894.3499999999999 894.3499999999999 894.3499999999999 ZT16-19 994.55 994.55 994.55 ZT20-23 1208.4 1208.4 1208.4