Table 2 Results of multiple comparisons applied to maximum frequency values. fmax (Dunn method). The test computes statistic Q. the number of rank sums. and shows whether P < 0.05 or not for the pair being compared. P is the probability that the null hypothesis may be rejected and so concludes that there are differences between treatments. Diff of ranks is the difference in the rank sum orders being compared. The rank sums are a measure of the difference between two treatments.

0.600

1.897

No

1.120

3.542

Yes

0.210

0.664

No

0.140

0.443

No

1.830

5.787

Yes

0.740

2.340

No

2.130

6.736

Yes

1.670

5.281

Yes

0.390

1.233

No

0.980

3.099

Yes

2.430

7.684

Yes

1.860

5.882

Yes

2.730

8.633

Yes

2.790

8.823

Yes

2.040

6.451

Yes

0.880

2.783

No

2.340

7.400

Yes

1.810

5.724

Yes

0.300

0.949

No

0.930

2.941

Yes

Pressure level 3

Pressure level 4

Comparison

Diff of Ranks

Q

P < 0.05

Diff of Ranks

Q

P < 0.05

0.600

1.897

No

0.400

1.265

No

0.210

0.664

No

0.450

1.423

No

0.040

0.126

No

1.380

4.364

Yes

1.200

3.795

Yes

1.570

4.965

Yes

0.810

2.561

No

0.050

0.158

No

0.640

2.024

No

0.980

3.099

Yes

1.800

5.692

Yes

1.170

3.700

Yes

0.170

0.538

No

0.930

2.941

Yes

0.990

3.131

Yes

1.120

3.542

Yes

1.160

3.668

Yes

0.190

0.601

No