condition mean min max ZT0-3 59.905950000000004 59.905950000000004 59.905950000000004 ZT4-7 42.415099999999995 42.415099999999995 42.415099999999995 ZT8-11 29.78215 29.78215 29.78215 ZT12-15 37.5953 37.5953 37.5953 ZT16-19 46.220600000000005 46.220600000000005 46.220600000000005 ZT20-23 64.46605 64.46605 64.46605