The daily.all file is generated from a script under development by our friends at New England Science and Technology in Natick MA.    Please consider it as a "beta" quality for now.    Using the list of spacecraft from the weekly Keps bulletin, it pulls data from USSF once per day and publishes around 2300 UTC.

NASA's Johnson Space Flight center has decommissioned the system that used to provide us with high accuracy TLE for ISS, so this may suffice for the near term.   

de KM1P Joe