condition mean min max ZT0-3 1413.75 1413.75 1413.75 ZT4-7 1012.2 1012.2 1012.2 ZT8-11 992.4000000000001 992.4000000000001 992.4000000000001 ZT12-15 972.6500000000001 972.6500000000001 972.6500000000001 ZT16-19 1296.35 1296.35 1296.35 ZT20-23 1383.5 1383.5 1383.5