Can someone confirm that the most recent entry (add) in a RollingWindow should be at index 0?

If I examine the rolling window in the deubbger it appears correct ...

Then given these two lines of code for a test:

decimal test = _fastCCIWindow[4].Value;
bool test1 = _fastCCIWindow[1].Value > 0m;

Here are the results in the debugger: