condition mean min max ZT0-3 70.0309 70.0309 70.0309 ZT4-7 42.185900000000004 42.185900000000004 42.185900000000004 ZT8-11 18.609099999999998 18.609099999999998 18.609099999999998 ZT12-15 16.4804 16.4804 16.4804 ZT16-19 45.6764 45.6764 45.6764 ZT20-23 80.6348 80.6348 80.6348