Table 5.

Post hoc test values for intragroup significance

Groups	N	Mean (MPa)	Std. Deviation	Minimum	Maximum	P value
Group 2	10	1.63	0.22	1.36	2.02
Group 3	10	1.91	0.34	1.28	2.38	<0.001
Group 4	10	2.28	0.16	2.09	2.52