Table 2 Step-by-step calculation of the mean distance travelled (MDT) of field Aedes albopictus males released in the first experiment (April 2016)

A. Radius inner (km)

0

0.025

0.05

0.075

0.1

0.125

B. Radius outer (km)

0.025

0.05

0.075

0.1

0.125

0.150

C. Area (km²)

0.001964

0.005891

0.009818

0.013745

0.017672

0.0251599

D. Area total (km²)

0.0707

E. Number of traps

3

4

5

3

3

2

F. Total number of traps

20

G. CF = (C/D)*F

0.55

1.67

2.78

3.89

5.00

6.11

H

47

51

43

4

3

4

I. ER = (H/E) * G

8.70

21.25

23.89

5.19

5.00

12.22

J

56.20

K. Distance (A+B)/2

0.0125

0.0375

0.0625

0.0875

0.1225

0.1375

L

0.109

0.799

1.493

0.454

0.562

1.680

M

5.095486

MDT

0.066826