condition mean min max ZT0-3 54.6344 54.6344 54.6344 ZT4-7 42.87115 42.87115 42.87115 ZT8-11 52.385149999999996 52.385149999999996 52.385149999999996 ZT12-15 44.01435 44.01435 44.01435 ZT16-19 68.74965 68.74965 68.74965 ZT20-23 51.555 51.555 51.555