Azure Cache for Redis

Hello,

I am trying to optimize the cost for Azure Cache for Redis. Right now i have an E100 sku deployed and checking if there is a possibility to right size the instance to a lower tier. I checked the utilization metrics and could find low CPU, memory and low server load. However i am struggling to understand the metrics for the connected clients as this is one of the important criteria for rightsizing.

Can someone please tell me if i need to look the MAX or SUM aggregation for connected clients? As per azure pricing E100 include upto 100,000 connection but i would like to understand if it is concurrent connection during a month or summation of all connection during a month.

Can someone please help me to understand this?