Site: Faculdade de Saúde Pública da USP
Facility: IFUSP trailer
Period: 2023 Sep-11 to Jan-31
Responsible: Luciana Rizzo (lrizzo@usp.br)

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Equipment:
O3 Thermo 49i SN114001
SMPS 3082 (SN2001415003) + CPC3772 (SN122801)

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Inlets:
Height: ~2,5 m above ground
Aerosol line: SMPS+CPC, conductive tubing, ~1.0 LPM, Magee diffusion dryer (RH<40%)
Gas line: O3, Teflon tubing, ~1.4 LPM

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Description of data treatment and metadata:

O3
Zero checks every 5-7 days.
Original sampling period: 60 sec.
Excluded periods with instrument alarms (pump status, temperature, etc).
Excluded periods of zero check.
Data saved as 5min and 30min averages, time stamp refers to the beginning of the period.
Columns in data file:
Time(UTC): datetime in UTC
UnixTime(UTC): seconds since 01-Jan-1970 in UTC
O3 Mean (ppb): O3 mixing ratio in ppb

SMPS
Original sampling period: 150 sec.
Diameter range: 10.2 - 429.4 nm, in 104 bins
Excluded periods with instrument alarms and diagnostic parameters out of range.
Warning: Data IS NOT COMPENSATED for standard temperature and pressure.
Data saved as 5min and 30min averages, time stamp refers to the beginning of the period.
Columns in data file:
"datetime(utc)": datetime in UTC
"Dpg(nm)": mean geometric diameter
"Mode(nm)": size distribution mode
"GeoStd": geometric standard deviation
"TotConc(cm-3)": total particle number concentration
"SurfArea(um2/cm3)": particle surface area, assuming spherical shape
"Vol(um3/cm3)": particle volume, assuming spherical shape
"N50(cm-3)": particle number concentration in the size range Dp<50nm
"10.2" ... "429.4": Normalized particle number size distribution (dN/dlogDp, cm-3) for each diameter bin
"SampleTemp(C)": sample temperature
"SamplePress(kPa)": sample pressure
"SampleRH(%)": sample relative humidity
"SheathFlow(lpm)": sheath flow
"AerosolFlow(lpm)": inlet flow