condition mean min max ZT0-3 0.21238550825 0.11143017849999999 0.313340838 ZT4-7 0.037806568250000006 0.0 0.07561313650000001 ZT8-11 2.01745134675 0.0850845465 3.9498181470000002 ZT12-15 7.909447289999999 6.372829659999999 9.44606492 ZT16-19 4.552183435250001 3.5589575900000003 5.5454092805 ZT20-23 1.84265373425 1.4284015415 2.256905927