condition mean min max ZT0-3 1836.45 1836.45 1836.45 ZT4-7 1184.5 1184.5 1184.5 ZT8-11 1167.4499999999998 1167.4499999999998 1167.4499999999998 ZT12-15 1185.1 1185.1 1185.1 ZT16-19 1297.75 1297.75 1297.75 ZT20-23 1600.3000000000002 1600.3000000000002 1600.3000000000002