condition mean min max ZT0-3 3228.3 3228.3 3228.3 ZT4-7 2902.1 2902.1 2902.1 ZT8-11 3466.95 3466.95 3466.95 ZT12-15 3289.6000000000004 3289.6000000000004 3289.6000000000004 ZT16-19 3401.8999999999996 3401.8999999999996 3401.8999999999996 ZT20-23 3294.6000000000004 3294.6000000000004 3294.6000000000004