The overall Band score is the average of the scores from all the four modules, rounded to the nearest whole or half band. All the four modules are calculated out of 9 Bands.
If the average of the scores ends up with 0.25 then the overall band score is rounded up to the next half band.
If the average of the scores ends up with 0.75 then the overall Band score is rounded up to the next whole band.
For instance
1. L – 6.5
R – 6.5
W – 5
S – 7
25.0
Divide by 4 = 25/4 = 6.25
Round off to the next half band
Overall – 6.5
2. L – 6.5
R – 6.5
W – 5.5
S – 6.0
24.5
Divide by 4 = 24.5/4 = 6.125
Round off to the whole band as it is less than 0.25
Overall = 6
3. L – 4
R – 3.5
W – 4
S – 4
19.5
Divide by 4 = 19.5/4 = 3.875
Fraction is above . 75 so round off to next whole band
Overall = 4
L= 6 S=7 R=6.5 W=8