condition mean min max ZT0-3 0.03324555 0.01915905 0.04733205 ZT4-7 0.056883750000000004 0.056883750000000004 0.056883750000000004 ZT8-11 0.0191946 0.0191946 0.0191946 ZT12-15 0 0 0 ZT16-19 0.00942865 0.00942865 0.00942865 ZT20-23 0.02841225 0.02841225 0.02841225