# ASPM Throughput Analysis: Definitions of Variables

From ASPMHelp

The following definitions define the fields in the ASPM reports of **Throughput Analysis**:

**Arrival Rate.**Filter option limiting results to a minimum and maximum number of arrivals per unit of time.**Arrivals (Max, 90th, 75th, 50th, Mean).**The distribution of actual hourly arrivals expressed in terms of the maximum, 90th percentile, 75th percentile, 50th percentile (median) and average number of arrivals per hour.**Count of Quarters.**Count of quarters for the specified conditions on a selected date.**Departure Rate.**Filter option limiting results to a minimum and maximum number of departures per unit of time.**Departures (Max, 90th, 75th, 50th, Mean).**The distribution of actual hourly departures expressed in terms of the maximum, 90th percentile, 75th percentile, 50th percentile (median) and average number of departures per hour.**Hour (From... To...).**Filter option limiting results to specified hours of the day (00–23).**Maximum per Hour (Departures, Arrivals, Operations).**Maximum number of departures, arrivals, and total operations performed in the corresponding count of hours.**Runways.**Filter option limiting results to runway configurations for the airport selected.**Total (Departures, Arrivals, Operations).**Total number of departures, arrivals, and total operations handled for the time period and conditions specified.**Total (Max, 90th, 75th, 50th, Mean).**The distribution of actual hourly total operations (arrivals and departures) expressed in terms of the maximum, 90th percentile, 75th percentile, 50th percentile (median) and average number of operations per hour.**Total Rate.**Filter option limiting results to a minimum and maximum total number of operations (Arrivals + Departures) per specified unit of time.**Weather.**Weather conditions expressed in terms of visibility and cloud ceilings. They can be either IMC (Instrument Meteorological Conditions) or VMC (Instrument Meteorological Conditions.**Weather Conditions (All, IMC, VMC).**Filter option limiting results to specific weather conditions expressed as IMC (Instrument Meteorological Conditions), VMC (Instrument Meteorological Conditions), or All (both IMC and VMC).