Got est_noise running in virtual solaris box.

Previously, est_noise by Langbein compiles successfully but quit when run it. The only error message was "Killed"--nothing else. This proves to be the problem of large expense of ram--est_noise requires 1.7+GB memory to run. I found that the maximum number of observations is hardwired into the fortran code (8103). Considering my CGPS time series are not so long. I changed this threshold to 5002. It works! Great.