condition mean min max ZT0-3 42.546099999999996 42.546099999999996 42.546099999999996 ZT4-7 25.973300000000002 25.973300000000002 25.973300000000002 ZT8-11 40.1667 40.1667 40.1667 ZT12-15 83.85900000000001 83.85900000000001 83.85900000000001 ZT16-19 74.05765 74.05765 74.05765 ZT20-23 53.574200000000005 53.574200000000005 53.574200000000005