condition mean min max ZT0-3 71.98581666666666 47.004900000000006 107.2465 ZT4-7 53.63465 53.63465 53.63465 ZT8-11 45.5806 45.5806 45.5806 ZT12-15 104.3047 103.19825 105.41115 ZT16-19 115.98165 115.98165 115.98165 ZT20-23 133.8835 133.8835 133.8835