condition mean min max ZT0-3 64.608839 64.608839 64.608839 ZT4-7 33.855636000000004 33.855636000000004 33.855636000000004 ZT8-11 34.4529425 34.4529425 34.4529425 ZT12-15 39.39998799999999 39.39998799999999 39.39998799999999 ZT16-19 46.5819085 46.5819085 46.5819085 ZT20-23 48.550543 48.550543 48.550543