condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.06156116375 0.0 0.1231223275 ZT8-11 0.051008922750000005 0.0 0.10201784550000001 ZT12-15 0.0199361405 0.0 0.039872281 ZT16-19 0.05502123875 0.0 0.1100424775 ZT20-23 0.11832623475 0.11608865199999999 0.1205638175