All Observing Hours
All Observing Hours = Actual hours of time in all categories: Scheduled, Maintenance, Test, Unscheduled, or Shutdown.
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- Scheduled: Planned hours of observing time for peer-reviewed science proposals.
- Scheduled = [ Astronomy + Downtime ]
- Astronomy: Actual hours of VLA and ALMA observing time for peer-reviewed science proposals.
- Downtime: Hours lost during scheduled observing time for peer-reviewed science proposals.
- Maintenance: Actual hours of scheduled service of infrastructure, structure, electronics, and software.
- Test: Actual hours of test observations rather than peer-reviewed science proposals.
- Unscheduled: Actual idle hours owing to gaps between observing programs that cannot be scheduled and to extended inclement weather.
- Shutdown: Actual shutdown hours, usually for a holiday or major equipment work.
