else statement does not return to loop

I have a code that opens a file, calculates the median value and writes that value to a separate file. Some of the files maybe empty so I wrote the following loop to check it the file is empty and if so skip it, increment the count and go back to the loop. It does what is expected for the first empty file it finds ,but not the second. The loop is below

t = 15.2
while t>=11.4:
 if os.stat(r'C:\Users\Khary\Documents\bin%.2f.txt'%t ).st_size > 0:  
    print("All good")
    F= r'C:\Users\Documents\bin%.2f.txt'%t 
    print(t)  
    F= np.loadtxt(F,skiprows=0)
    LogMass = F[:,0]
    LogRed =  F[:,1] 
    value = np.median(LogMass)  
    filesave(*find_nearest(LogMass,LogRed))
    t -=0.2
 else:
    t -=0.2 
    print("empty file")  

The output is as follows

All good
15.2
All good
15.0
All good
14.8
All good
14.600000000000001
All good
14.400000000000002
All good
14.200000000000003
All good
14.000000000000004
All good
13.800000000000004
All good
13.600000000000005
All good
13.400000000000006
empty file
All good
13.000000000000007
Traceback (most recent call last):
  File "C:\Users\Documents\Codes\Calculate Bin Median.py", line 35, in <module>
    LogMass = F[:,0]
IndexError: too many indices

A second issue is that t somehow goes from one decimal place to 15 and the last place seems to incrementing whats with that? Thanks for any and all help