Further, 60 to 95% of {TAIL ~ grain accumulation} should occur in a direction range of {HEAD ~ ±5 to 45 degrees} deviated from the ideal orientation  
Further , 60 to 95 % of { TAIL ~ grain accumulation } should occur in a direction range of { HEAD ~ ±5 to 45 degrees } deviated from the ideal orientation
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH