I have installed the istio with kiali from https://github.com/istio/istio/tree/release-1.1/install/kubernetes/helm/istio

But found that on Kiali dashboard I am able to see only 6 hours traffic even when I have stored that data in Prometheus for last 7 days.

So is there any way or property so that I can visualize the dashboard with statistics of last 24 hours or more.