[Aswani K Madhu]

Hi,
I am new to OpenFOAM, I need to find reflection and transmission wave heights due to a porous and non porous breakwater as a part of my project. I haven't changed much of the olaFlow base conditions, expect wave height and time period. I have attached the fig showing the domain.
breakwater with ramp.png
For wave period 1.7s and wave height 0.08m, the results from guage1VOF ,gauge2VOF, guage3VOF, guage4VOF at distance 10m, 20.1m,20.15m and 23.1m respectively are shown below and the breakwater is placed at 15.56m.

olaflow doubts.docx

Please help me to understand what does this gaugesVOF means.
and also how can I find reflection and transmission coefficient from this data.