condition mean min max ZT0-3 115.15299999999999 115.15299999999999 115.15299999999999 ZT4-7 53.22825 53.22825 53.22825 ZT8-11 48.99575 48.99575 48.99575 ZT12-15 151.99099999999999 151.99099999999999 151.99099999999999 ZT16-19 196.91449999999998 196.91449999999998 196.91449999999998 ZT20-23 175.31400000000002 175.31400000000002 175.31400000000002