Readme: The O3 data were collected at the CCNY campus in the summer of 2020. 1. 2020 Summer data at the City College of New York, Aeronomy Lab (40.819703, -73.948231). Datafile name format: 2020MMDD_2B Time Period: As specified in directory Site Location: NYC, CCNY Aeronomy Lab (40.819703, -73.948231). Instrument: 2B Technologies 202/205 Flow No Analog In Data format: Column Header: Log Number,Ozone,Cell Temp,Cell Pressure,Flow Rate,Latitude,Longitude,Altitude,Date,Time Column-2: O3 concentration in the unit of ppb Last column: time in Easter Daylight Saving Time (EDT) or local time Last 2nd column: Date day/mon/year Tom Legbandt (Email: legbandt@ccny.cuny.edu)