This program is run with the command line (after compiling to a.out)
./a.out infile.dat outfile.dat

The infile should be low-density trap-loss decay data taken at 10 Hz sample 
rate (1 column only.)

The outfile has three columns: index, value, sigma
where index is the index of the fit parameter
value is the best-fit value of the fit parameter 
sigma is the 1-sigma uncertainty in the fit parameter