condition mean min max ZT0-3 44.524925 37.29455 51.755300000000005 ZT4-7 29.4347 29.4347 29.4347 ZT8-11 29.55325 29.55325 29.55325 ZT12-15 0 0 0 ZT16-19 42.66095 42.66095 42.66095 ZT20-23 29.28615 29.28615 29.28615