condition mean min max ZT0-3 0.25278849999999997 0.25278849999999997 0.25278849999999997 ZT4-7 0.1261715 0.1261715 0.1261715 ZT8-11 0.05408535 0.05408535 0.05408535 ZT12-15 0.1208072 0.1208072 0.1208072 ZT16-19 0.315836 0.315836 0.315836 ZT20-23 0.334954 0.334954 0.334954