what's standard temp suppose to read on dash temp, on 2006 Dodge Magnum

I put car in shop to have checked out, I thought the gage used to run between 1\4 and 1\2 but it's going straight to 1\2 & my coolant level was down 2 quarts Garage told me 1\2 is normal

it should read around 210f ,pressure test cooling system for leaks