condition mean min max ZT0-3 49.552123 49.552123 49.552123 ZT4-7 52.349833000000004 52.349833000000004 52.349833000000004 ZT8-11 46.657178 46.657178 46.657178 ZT12-15 49.307498 49.307498 49.307498 ZT16-19 41.974909 41.974909 41.974909 ZT20-23 42.264725999999996 42.264725999999996 42.264725999999996