At 18.24 07/04/98 EDT, you wrote: <<< Enrico, On the meteor reports you post, I do not recognize the next to last column title "tm", just before Teff. It is 40 for all lines. Can you tell me what this is? Thanx Wayne >>> [tm] is the mean dead time (sec) for plotting (or writing) a meteor. Bye e n r i c o