UTA TRAX and Other Mobile Deployment Status

This page provides diagnostic information on the latest real-time data received from air quality instrumentation packages placed on TRAX light rail cars and other research mobile units across northern Utah. The first table provides the last timestamps of data collected from each deployed device. If a timestamp is shown in green, further information on the sensed measurements are provided in the tables below. If a timestamp is shown in red, data from this device are at least 2 hours old. If a timestamp is shown in purple, data have not been collected for several days or longer. Measurements are highlighted in yellow if a value from an instrument appears to be outside of desired bounds.



Last Updated: 2025-08-13 15:02 Local

LAST REPORT TIME FOR EACH DEVICE

Report Within 2 Hours Report Older 2 Hours Report Older 7 Days (-) No Device Found

Platform ID Data Logger PM Sensor O3 Sensor LGR Sensor NO2 Sensor
TRX01 (UTA TRAX 1136) 2025-08-13 14:50:25 2025-08-13 14:50:00 2025-08-13 14:50:25 2025-08-13 14:47:03 -
TRX02 (UTA TRAX 1104) 2025-08-13 14:50:30 2025-08-13 14:50:00 2025-08-13 14:50:30 - 2025-04-30 09:56:35
TRX03 (UTA TRAX 1034) 2025-08-12 08:00:40 2025-08-11 16:13:00 2025-08-11 16:13:45 - -

GPS STATUS TABLE

Platform ID Record Time GPS Time GPS Satellites Latitude Longitude Elevation Speed Direction GPS Valid (1-Yes)
TRX01 2025-08-13 14:50:25 20:50:21 UTC 9.00 40.72189 -111.92052 1290.60 m 0.00 m/s 316.80 deg 1.00
TRX02 2025-08-13 14:50:30 20:50:27 UTC 8.00 40.72311 -111.91925 1305.00 m 0.00 m/s 305.20 deg 1.00

LOGGER AND MET STATUS TABLE

Platform ID Record Time Battery Voltage Logger Temperature Train Top Temperature Train Top Relative Humidity
TRX01 2025-08-13 14:50:25 12.98 volts 48.06 deg C 37.01 deg C 8.43 %
TRX02 2025-08-13 14:50:30 13.35 volts 28.53 deg C 25.40 deg C 41.66 %

ES405 DUST MONITOR STATUS TABLE

Platform ID Record Time PM1 PM2.5 PM4 PM10 Flow Rate Temperature Internal RH Pressure Error Code
TRX01 2025-08-13 14:50:00 0.60 ug/m3 1.20 ug/m3 3.10 ug/m3 12.80 ug/m3 1.00 L/min 47.00 deg C 5.60 % 652.60 hPa No Alarms (0)
TRX02 2025-08-13 14:50:00 1.60 ug/m3 2.20 ug/m3 3.10 ug/m3 7.30 ug/m3 1.00 L/min 29.50 deg C 29.80 % 652.70 hPa No Alarms (0)

2B OZONE MONITOR STATUS TABLE

Platform ID Record Time Ozone Flow Rate Temperature Internal Pressure
TRX01 2025-08-13 14:50:25 52.40 ppbv 2.04 L/min 61.10 deg C 821.50 hPa
TRX02 2025-08-13 14:50:30 10.10 ppbv 2.02 L/min 42.30 deg C 816.90 hPa

LGR MONITOR STATUS TABLE (TRX01 ONLY)

Platform ID Record Time CO2 CH4
TRX01 2025-08-13 14:47:03 425.48 ppm 1.97 ppm

NO2 MONITOR STATUS TABLE (TRX02 ONLY)

Platform ID Record Time NO2