Non-integer "number of available connections" makes no sense

Having a non-integer number of available connections makes no sense, as seen on the attached screenshot. The message says: " Available Connections: The number of available connections was 17.466666666666665. ".

Obviously, this is wrong. First, the number sound be rounded, or at most, use 2 decimals. Second, the message should say that this is an average: "The average number of connections was ...".

Bonus points if you could tell the user why this is an alert. In my view, this is not bad at all. It just means I'm using connections! Note that another alert below that says that number of available connections is 20, which is the pool size. So, again, why is this bad?