condition mean min max ZT0-3 413.77775 375.75350000000003 451.802 ZT4-7 1024.9850000000001 1024.9850000000001 1024.9850000000001 ZT8-11 856.8095 856.8095 856.8095 ZT12-15 0 0 0 ZT16-19 292.05449999999996 292.05449999999996 292.05449999999996 ZT20-23 385.9805 385.9805 385.9805