condition mean min max ZT0-3 236.2935 236.2935 236.2935 ZT4-7 210.25622049999998 210.25622049999998 210.25622049999998 ZT8-11 205.63647450000002 205.63647450000002 205.63647450000002 ZT12-15 266.3868865 266.3868865 266.3868865 ZT16-19 302.88941650000004 302.88941650000004 302.88941650000004 ZT20-23 365.7687595 365.7687595 365.7687595