Table 1. Concentration values, mean direction, basic statistics and omnibus tests of the three axis types.

A-axis type	SLA	DPA	MBRA
Mean Vector (µ)	161.016	153.446	159.21
Length of Mean Vector (r)	0.393	0.201	0.346
Concentration (k)	0.856	0.411	0.737
Circular Variance	0.303	0.399	0.327
Circular Standard Deviation	39.128	51.286	41.745
95% Confidence Interval(−/+) for µ	150.262	131.763	146.852
	171.77	175.129	171.568
One Sample Tests
Rayleigh Test (Z)	12.54	3.286	9.69
Rayleigh Test (p)	0.0000	0.037	0.000
Watson’s U2 Test (Uniform, U2)	0.892	0.289	0.633
Watson’s U2 Test (p)	<0.005	<0.01	<0.005
Kuiper’s Test (Uniform, V)	3.656	2.397	3.146
Kuiper’s Test (p)	<0.01	<0.01	<0.01
V Test (V; expected mean 170.00)	0.389	0.193	0.34
V Test (u)	4.947	2.457	4.324
V Test (p)	0.000	0.007	0.000