[sumo-user] Flow definition disrepancy

[Chedly Bourguiba <chedly@xxxxxxxxxxx>]

Hi,

I have an intersection where I know the exact vehicle count per lane and movement per hour (a specific hour). When running sumo, I define the flow XML file using the vehicle per hour attribute and then I compare the count I had for the specific hour that I modeled and some lanes would have a count higher than the value I used to model the flow. 
Do you have any leads/idea where the discrepancy can come from?
Thank you in advance for your help!

Best,

Chedly