condition mean min max ZT0-3 0.0309875 0.0 0.061975 ZT4-7 0.0 0.0 0.0 ZT8-11 0.062974 0.062974 0.062974 ZT12-15 0 0 0 ZT16-19 0.1219975 0.1219975 0.1219975 ZT20-23 0.0 0.0 0.0