Sites and instruments

The tables on this page are made from the package’s configuration each time the documentation is built, so they always match the version of uataq they document. They say what the configuration says, not what the archive holds: to see which days have data, use Find sites and data. The words in the headings are explained in the glossary at the end of the page. Every site is in Utah, so the local time of all of them is America/Denver (see Times are UTC).

In both site tables:

• Active is “yes” when at least one instrument at the site has no removal date in the configuration. Otherwise it gives the date the last instrument was removed. A site can stop sending data before its instruments are marked removed, so check with Find sites and data before you plan on recent data.

• Groups are the research groups whose archives hold the site’s data.

• Pollutants are every pollutant measured at the site, by its instruments past and present. Instruments gives the dates each one was there; reads are cut to those dates.

Fixed sites

SID	Name	Latitude, longitude	zagl (m)	Active	Groups	Pollutants	Instruments
ASB	Aline Wilmot Skaggs	40.763226, -111.849278		no, since 2015-08-06	lin	CO2	licor_6262 2001-02-08 to 2015-08-06
CSP	Castle Peak	40.0509, -110.0194	4	yes	lin	CO2, CH4	lgr_ugga since 2015-11-17
DBK	Daybreak	40.538497, -112.069528	5	yes	lin	CO2, PM2.5	licor_6262 2004-01-22 to 2022-05-14 licor_7000 since 2022-05-16 metone_es642 since 2017-07-19
FRU	Fruitland	40.20873, -110.8403	4	no, since 2026-04-04	lin	CO2, CH4	lgr_ugga 2015-03-19 to 2026-04-04
HDP	Hidden Peak	40.560644, -111.645278	15	no, since 2025-02-08	lin	CO2, CH4	lgr_ugga 2016-07-20 to 2025-02-08
HEB	Heber	40.506808, -111.403636	7	no, since 2025-09-17	lin	CO2	licor_6262 2015-07-28 to 2025-05-30 licor_7000 2025-05-30 to 2025-09-17
HPL	Horsepool	40.143711, -109.4672	4	yes	lin	CO2, CH4	lgr_ugga since 2015-01-28
IMC	Intermountain Medical	40.660395, -111.89075	35	no, since 2020-09-16	lin	CO2	licor_6262 2016-09-25 to 2020-09-16
LDF	SLV Landfill	40.748783, -112.033941	2	no, since 2023-09-29	lin	CO2, CH4	lgr_ugga 2023-06-26 to 2023-09-29
LGN	Logan	41.761353, -111.822739	5	no, since 2020-03-16	lin	CO2	licor_6262 2015-07-27 to 2020-03-16
LG2	Logan	41.758105, -111.813234	5	no, since 2022-05-12	lin	CO2	licor_6262 2019-10-26 to 2022-05-12
MSA	Murray Satellite	40.763226, -111.849278		no, since 2016-07-27	lin	CO2	licor_6262 2013-08-07 to 2016-07-27
MUR	Murray	40.763226, -111.849278		no, since 2013-08-03	lin	CO2	licor_6262 2005-01-07 to 2013-08-03
ROO	Roosevelt	40.294169, -110.009	4	no, since 2019-07-17	lin	CO2, CH4	lgr_ugga 2015-03-23 to 2019-07-17
RPK	Rose Park	40.794386, -111.931925	7	yes	lin	CO2	licor_6262 2009-02-24 to 2023-09-07 licor_7000 since 2023-09-07
SUG	Sugarhouse	40.739906, -111.857831	10	no, since 2025-08-23	lin	CO2, PM2.5	licor_6262 2005-01-11 to 2022-02-12 licor_7000 2022-06-13 to 2025-08-23 metone_es642 2017-06-29 to 2020-04-24
SUN	Suncrest	40.480978, -111.837047	5	no, since 2019-11-08	lin	CO2	licor_6262 2015-08-11 to 2019-11-08
WBB	William Browning Building	40.766189, -111.847672	35	yes	lin	CO2, CH4, BC, PM2.5, NO, NO2, NOx, CO, O3	lgr_ugga since 2013-10-09 magee_ae33 2020-07-29 to 2024-06-20 metone_es642 2017-03-07 to 2022-06-08 teledyne_t200 since 2017-01-19 teledyne_t300 since 2017-05-03 teledyne_t400 since 2016-08-29 teledyne_t500u 2020-07-29 to 2023-01-25 teom_1400ab 2016-09-22 to 2017-03-02

Mobile sites

Instruments on TRAX trains (TRX) and buses (BUS). These mobile sites have no fixed location: the position of each measurement comes from the site’s gps. The number in a mobile site’s name is the vehicle’s UTA fleet number: the light-rail car number for TRAX (TRAX 1136) and the bus fleet number for a bus (BUS 18153).

SID	Name	Active	Groups	Pollutants	Instruments
BUS01	BUS 18153	yes	horel	O3, NO, NO2, NOx, PM2.5, PM1, PM4, PM10	2b_205 since 2021-09-28 2b_405 2021-09-28 to 2022-05-10 cr1000 since 2021-09-28 gps since 2021-09-28 metone_es642 2021-09-28 to 2026-02-17 21:28:00 UTC metone_es405 since 2026-02-17 21:28:00 UTC
BUS02	BUS 18151	yes	horel	O3, NO, NO2, NOx, PM2.5, PM1, PM4, PM10	2b_205 since 2022-02-04 2b_405 2022-02-15 to 2023-05-17 cr1000 since 2022-02-04 gps since 2022-02-04 metone_es642 2022-02-04 to 2025-03-13 02:38:00 UTC metone_es405 since 2025-03-13 02:38:00 UTC
BUS03	BUS 18152	yes	horel	O3, NO, NO2, NOx, PM2.5, PM1, PM4, PM10	2b_205 since 2022-02-05 2b_405 2023-01-20 to 2024-05-15 cr1000 since 2022-02-05 gps since 2022-02-05 metone_es642 2022-02-05 to 2024-12-05 06:09:00 UTC metone_es405 since 2024-12-05 06:09:00 UTC
BUS04	BUS 23101	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2023-05-02 cr1000 since 2023-05-02 gps since 2023-05-02 metone_es405 since 2023-05-02
BUS05	BUS 23103	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2023-07-12 cr1000 since 2023-07-12 gps since 2023-07-12 metone_es405 since 2023-07-12
BUS06	BUS 23102	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2023-09-14 cr1000 since 2023-09-14 gps since 2023-09-14 metone_es405 since 2023-09-14
BUS07	BUS 23105	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2023-09-20 cr1000 since 2023-09-20 gps since 2023-09-20 metone_es405 since 2023-12-08
BUS08	BUS 23104	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2024-01-17 cr1000 since 2024-01-17 gps since 2024-01-17 metone_es405 since 2024-01-17
BUS09	BUS 23120	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2024-01-19 cr1000 since 2024-01-19 gps since 2024-01-19 metone_es405 since 2024-01-19
BUS10	BUS 23107	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2024-03-18 cr1000 since 2024-03-18 gps since 2024-03-18 metone_es405 since 2024-03-18
BUS11	BUS 23108	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2024-03-01 cr1000 since 2024-03-01 gps since 2024-03-01 metone_es405 since 2024-03-01
BUS12	BUS 23106	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2024-03-22 cr1000 since 2024-03-22 gps since 2024-03-22 metone_es405 since 2024-03-22
BUS13	BUS 23109	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2024-04-01 cr1000 since 2024-04-01 gps since 2024-04-01 metone_es405 since 2024-04-01
BUS14	BUS 23111	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2024-05-08 cr1000 since 2024-05-08 gps since 2024-05-08 metone_es405 since 2024-05-08
BUS15	BUS 23112	yes	horel	O3, PM1, PM2.5, PM4, PM10	2b_205 since 2024-05-14 cr1000 since 2024-05-14 gps since 2024-05-14 metone_es405 since 2024-05-14
TRX01	TRAX 1136	yes	horel, lin	O3, PM2.5, PM1, PM4, PM10, CO2, CH4	2b_205 since 2015-05-13 cr1000 since 2014-11-11 gps since 2014-11-11 metone_es642 2014-12-05 to 2025-01-06 19:30:00 UTC metone_es405 since 2025-01-06 19:30:00 UTC lgr_ugga 2014-12-09 to 2024-08-28 lgr_ugga_manual_cal since 2023-11-18
TRX02	TRAX 1104	yes	horel, lin	O3, NO2, PM2.5, PM1, PM4, PM10	2b_205 since 2016-06-15 cr1000 since 2016-02-04 gps since 2016-02-04 lgr_no2 2016-06-27 to 2017-06-21 metone_es642 2016-02-04 to 2025-01-07 01:03:00 UTC metone_es405 since 2025-01-07 01:03:00 UTC teledyne_t500u since 2020-12-22
TRX03	TRAX 1034	yes	horel	O3, PM2.5, PM1, PM4, PM10	2b_205 since 2019-11-04 cr1000 since 2019-11-04 gps since 2019-11-04 metone_es642 2019-11-04 to 2025-01-03 20:16:00 UTC metone_es405 since 2025-01-03 20:16:00 UTC

Instruments

One row per instrument name in the configuration, with the class that reads it and the pollutants it measures. The class pages are under uataq.instruments, and what the columns of each level hold is on the Columns page.

cr1000 and gps have no pollutants: one is a datalogger that records housekeeping (battery voltage, enclosure temperature), the other a GPS receiver. get_obs never reads them, read_data does, and a mobile site’s get_obs uses its gps to place each measurement.

Name	Class	What it is	Pollutants	Sites
2b_205	BB_205	2B Technologies Model 205 ozone monitor (UV absorption).	O3	BUS01, BUS02, BUS03, BUS04, BUS05, BUS06, BUS07, BUS08, BUS09, BUS10, BUS11, BUS12, BUS13, BUS14, BUS15, TRX01, TRX02, TRX03
2b_405	BB_405	2B Technologies Model 405 nm NO/NO2/NOx monitor.	NO, NO2, NOx	BUS01, BUS02, BUS03
cr1000	CR1000	Campbell Scientific CR1000 datalogger.		BUS01, BUS02, BUS03, BUS04, BUS05, BUS06, BUS07, BUS08, BUS09, BUS10, BUS11, BUS12, BUS13, BUS14, BUS15, TRX01, TRX02, TRX03
gps	GPS	GPS receiver providing position, and speed and course where logged.		BUS01, BUS02, BUS03, BUS04, BUS05, BUS06, BUS07, BUS08, BUS09, BUS10, BUS11, BUS12, BUS13, BUS14, BUS15, TRX01, TRX02, TRX03
lgr_no2	LGR_NO2	Los Gatos Research NO2 analyzer (cavity-enhanced absorption).	NO2	TRX02
lgr_ugga	LGR_UGGA	Los Gatos Research Ultraportable Greenhouse Gas Analyzer.	CO2, CH4	CSP, FRU, HDP, HPL, LDF, ROO, TRX01, WBB
lgr_ugga_manual_cal	LGR_UGGA (model: lgr_ugga)	Los Gatos Research Ultraportable Greenhouse Gas Analyzer.	CO2, CH4	TRX01
licor_6262	Licor_6262	LI-COR LI-6262 infrared CO2/H2O gas analyzer.	CO2	ASB, DBK, HEB, IMC, LGN, LG2, MSA, MUR, RPK, SUG, SUN
licor_7000	Licor_7000	LI-COR LI-7000 infrared CO2/H2O gas analyzer.	CO2	DBK, HEB, RPK, SUG
magee_ae33	Magee_AE33	Magee Scientific AE33 aethalometer, measuring black carbon.	BC	WBB
metone_es405	MetOne_ES405	Met One E-Sampler ES-405, reporting PM1, PM2.5, PM4 and PM10.	PM1, PM2.5, PM4, PM10	BUS01, BUS02, BUS03, BUS04, BUS05, BUS06, BUS07, BUS08, BUS09, BUS10, BUS11, BUS12, BUS13, BUS14, BUS15, TRX01, TRX02, TRX03
metone_es642	MetOne_ES642	Met One E-Sampler ES-642, reporting PM2.5 only.	PM2.5	BUS01, BUS02, BUS03, DBK, SUG, TRX01, TRX02, TRX03, WBB
teledyne_t200	Teledyne_T200	Teledyne API T200 chemiluminescence NO/NO2/NOx analyzer.	NO, NO2, NOx	WBB
teledyne_t300	Teledyne_T300	Teledyne API T300 gas-filter-correlation CO analyzer.	CO	WBB
teledyne_t400	Teledyne_T400	Teledyne API T400 UV-absorption ozone analyzer.	O3	WBB
teledyne_t500u	Teledyne_T500u	Teledyne API T500U CAPS NO2 analyzer.	NO2	TRX02, WBB
teom_1400ab	Teom_1400ab	Thermo/R&P TEOM 1400ab tapered-element oscillating microbalance.	PM2.5	WBB

Glossary

SID

The site ID: the key of a site in the configuration, such as WBB or TRX01. It is the first argument of read_data(), get_obs() and get_site(), which turn it to upper case, so "wbb" works too. Each site also has a longer name (the Name column above).

mobile site

A site on a vehicle: a TRAX train (TRX) or a bus (BUS). Its configuration says "is_mobile": true and has no latitude or longitude. get_site() gives a MobileSite for it, whose get_obs() adds the position of each measurement from the site’s gps. Every other site is a fixed site (Site), with its latitude and longitude in the configuration.

zagl

The height above ground level of a fixed site’s measurements, in meters, from the site’s configuration. get_network_obs() gives it in a column of the same name. Mobile sites have none.

group

The research group whose archive holds an instrument’s data: lin (John Lin’s group: every fixed site, and some of the TRAX instruments) or horel (John Horel’s group: the buses and the other TRAX instruments). Some TRAX instruments are in both archives, for different years. group=None, the default of every read, picks the group for you; see Research group. uataq.filesystem.groups holds the two groups’ readers.

logger

How a group records an instrument, which sets the format of its raw files. The configuration gives it per site or per instrument, under loggers: {"lin": "campbellsci"}. The lin group’s loggers are campbellsci (monthly .dat files from a Campbell Scientific datalogger), air-trend (daily .csv files) and lgr_ugga (the daily .txt files the Los Gatos analyzer writes itself). The horel group’s only logger is campbellsci. For lin, the logger matters only at the raw level: the lin pipeline writes the other levels in a format of its own.

air-trend

A lin logger. The lin pipeline’s README says the raw files with a csv extension “are recorded via a raspberry pi running air-trend”. There is one file per day, named by its date.

instrument name

The key of an instrument under a site’s instruments in the configuration, such as lgr_ugga or teledyne_t400. It is what you pass to read_data(..., instruments=...), the key of the dictionary read_data() returns, and the name of the instrument’s folder in the lin archive. uataq reads it with the class that uataq.instruments.catalog gives for the entry’s model, or for the name itself when the entry has no model. The class says which pollutants the instrument measures.

lgr_ugga_manual_cal

A second instrument name for TRX01’s lgr_ugga, from 2023-11-18. The note in the configuration says: “Removed calibration tank and manually calibrated with lgr software periodically.” It has "model": "lgr_ugga", so it is read like any lgr_ugga, from a folder of its own in the lin archive. For what its _cal and _raw columns hold, see When _cal is empty. TRX01’s lgr_ugga is installed until 2024-08-28, so both are installed from 2023-11-18 to then. Mobile sites says in which months each has data, and Find sites and data shows which has data in any period.