condition mean min max ZT0-3 95.924383 95.924383 95.924383 ZT4-7 33.181391500000004 33.181391500000004 33.181391500000004 ZT8-11 40.398101 40.398101 40.398101 ZT12-15 44.880167 44.880167 44.880167 ZT16-19 113.13729649999999 113.13729649999999 113.13729649999999 ZT20-23 67.23994 67.23994 67.23994