Sample before	Sample after	pairwise diff
99.4	98.4	-1
106.2	111	4.8
115	113.4	-1.6
138.8	135	-3.8
141.8	140.8	-1
158.2	161	2.8
165.2	169	3.8
159.6	158.6	-1
213.8	215.8	2
141	142.8	1.8
110	107.6	-2.4
129	127.6	-1.4
152.8	153	0.2
180.8	179	-1.8
139.4	140	0.6
117.8	117.2	-0.6
225.2	234.4	9.2
171.6	176.8	5.2
154.6	158.4	3.8
111.2	112.4	1.2
201.6	205.6	4
142.6	135.6	-7
198	191	-7
168	160	-8
171.4	172.8	1.4
142.8	144	1.2
147.6	143.6	-4
170	170.2	0.2
182.6	183.2	0.6
109.4	111.6	2.2
184.6	184	-0.6
152.8	157.4	4.6
340.4	343.8	3.4
	n	33
	mean	0.36
	stdev	3.72
	se	0.65
	tc	2.04
	Error E	1.32
-0.96	< µ difference <	1.68