The rate of low energy ( \alt 150 MeV ) cosmic ray muons was measured at ground level as a function of several atmospheric parameters .
Stopped muons were detected in a plastic scintillator block and correlations were determined using a linear regression model .
A strong anti-correlation between fractional changes in the ground-level pressure and stopping muon rate of -3.0 \pm 0.5 was found , and also a -4.1 \pm 0.5 anti-correlation with the fractional change in atmospheric height at 10 kPa pressure .
A weak positive correlation with the 10 kPa temperature was also found , but it was shown not to be statistically significant in our data set .
The same analysis was applied to the total rate of all charged cosmic ray particles detected with the same apparatus , and good agreement with previous work was seen .
The pressure and height correlation parameters for stopping muons are larger than for the total rate of all charged particles by factors of about 1.6 and 3.7 , respectively .