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The USDA UV-B Monitoring and Research Program primarily uses two styles of Multifilter Rotating Shadowband
Radiometers (MFRSR) (UV-MFRSR and VIS-MFRSR) at each site, supplemented with additional sensors. Both styles of
shadowband radiometers have integral on-board data capture capability. The on-board data logging capability of the MFRSR
is used to record all auxiliary measurements. All measurements logged via the VIS-MFRSR are stored as 3-minute averages
aggregated from 15 second readings of each instrument's raw output voltages. Data from the UV-MFRSR is also stored as
3-minute averages. However, due to a slightly longer travel time of the UV-MFRSR shadowband its averages are aggregated from 20 second readings.
Both data loggers are polled from Colorado State University daily via
dedicated phone lines.
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