The ceilometer can run with Penn State software, using Brian Templeman's software, or both. The main difference is the type of output files generated. Brian's version creates a *.raw file. ASCII data 1.5-2Mb zipped (~73% compression) Penn Stae version has 4 files .6-1Mb zipped (~64% compression) *.r?? reflectivity file *.c?? cloud data file *.am 00-12 reflectivity and cloud ht plot *.pm 12-00 reflectivity and cloud ht plot Imagess include: jpg dailyt reflectivity plot (Brian) tif am and pm plot of reflectivity and cloud ht (PSU created in field)