Table 4. Definitions and provenance of calculated timeseries variables.

Variable Name	Description (Units)	Sources	Equation or streamMetabolizer function
Sources include other variables from this table, DateTimes of the [O2] data, hydraulic geometry coefficients from the cited sources, and site data (altitude, latitude, longitude). Where Sources are “X or Y”, the source ending in _nldas was preferred over _gldas, and _calcDischHarvey over _calcDischRaymond, whenever available.
baro_calcElev	Surface pressure (Pa)	altitude	calc_air_pressure()
depth_calcDischHarvey	Stream depth (m)	c and f 23, disch_nwis	c×disch_nwisf
depth_calcDischRaymond	Stream depth (m)	c and f 56, disch_nwis	c×disch_nwisf
dischdaily_calcDMean	Daily average discharge (m3 s−1)	disch_nwis	Daily mean (4am-3:59am)
doamp_calcDAmp	Daily amplitude in percent O2 saturation (%)	dopsat_calcObsSat	Daily range (4am-3:59am)
dopsat_calcObsSat	Percent O2 saturation (%)	doobs_nwis, dosat_calcGGbts	100×doobs_nwis/dosat_calcGGbts
dosat_calcGGbconst	[O2] at saturation (mgO2 L−1)	baro_calcElev	calc_DO_sat()
dosat_calcGGbts	[O2] at saturation (mgO2 L−1)	baro_nldas or baro_gldas	calc_DO_sat()
par_calcLat	Photosynthetic photon flux density, PPFD (μ mol m−2 s−1)	suntime_calcLon, latitude	calc_light()
par_calcLatSw	PPFD (μ mol m−2 s−1)	par_calcLat, par_calcSw	calc_light_merged()
par_calcSw	PPFD (μ mol m−2 s−1)	sw_nldas or sw_gldas	convert_PAR_to_SW()
sitedate_calcLon	Solar noon of the date (unitless)	DateTime	convert_UTC_to-_solartime()
sitetime_calcLon	Mean solar time (unitless)	DateTime, longitude	convert_UTC_to-_solartime()
suntime_calcLon	Apparent solar time (unitless)	DateTime, coordinates	convert_UTC_to-_solartime()
swdaily_calcDMean	Daily average downwards shortwave radiation flux (W m−2)	sw_nldas or sw_gldas	Daily mean (4am-3:59am)
veloc_calcDischHarvey	Stream velocity (m s−1)	k and m23, disch_nwis	k×disch_nwism
veloc_calcDischRaymond	Stream velocity (m s−1)	k and m56, disch_nwis	k×disch_nwism
velocdaily_calcDMean	Daily average velocity (m s−1)	veloc_calcDischHarvey or veloc_calcDischRaymond	Daily mean (4am-3:59am)