Threshold values for Network out counter

Hello there,
one of my customer that has an M60 that is monitored with Nagios. One of the counter is to check the Network out that threshold is set at 2.0Mb as Warning and 2.5 as Critical. For that values we get a continuous alert on the dashboard. I think the values are too small.

I’m kindly ask, for M60 which are threshold values that could be set beyond which they are considered such as Warning and Critical?

Thank you in advance.