Table 4.

Dunn post hoc test results.

Groups	Rank differences	Calculated Z	Critical  Z	p
C− and C+	7.1	2.5102	2.394	<0.05
C– and E6	7.9	2.7931	2.394	<0.05
C+ and E6	0.8	0.2828	2.394	n.s.

n.s.: nonsignificant value.