condition mean min max ZT0-3 94.7069 94.7069 94.7069 ZT4-7 33.900400000000005 33.900400000000005 33.900400000000005 ZT8-11 79.3784 79.3784 79.3784 ZT12-15 235.81799999999998 235.81799999999998 235.81799999999998 ZT16-19 223.1385 223.1385 223.1385 ZT20-23 168.6135 168.6135 168.6135