condition mean min max ZT0-3 53.95185 53.95185 53.95185 ZT4-7 51.935500000000005 51.935500000000005 51.935500000000005 ZT8-11 41.2137 41.2137 41.2137 ZT12-15 44.3989 44.3989 44.3989 ZT16-19 57.74995 57.74995 57.74995 ZT20-23 53.16375 53.16375 53.16375