condition mean min max ZT0-3 0.01082315 0.01082315 0.01082315 ZT4-7 0.01494665 0.01494665 0.01494665 ZT8-11 0.0122043 0.0122043 0.0122043 ZT12-15 0.0149053 0.0149053 0.0149053 ZT16-19 0.0132163 0.0132163 0.0132163 ZT20-23 0.01305735 0.01305735 0.01305735