Number fractions of grain shape aspect ratio.

Sample	Grain shape aspect ratio ranges
	<0.61	0.61–0.63	>0.63
1	0.626	0.264	0.109
2	0.511	0.347	0.143
3	0.410	0.551	0.040
4	0.525	0.385	0.090
5	0.480	0.460	0.060
6	0.662	0.289	0.048