You can go to the Data Sharing site, or you can use the online data form shown here. All General Information is required for participation. Post as many observations as you collected in the second section, "Measurements."
The measurement of ground level ozone will be determined using ozone sensitive test strips and a colormetric chart to convert the color on the chemically treated Test Cards, with the color on the chart.
The data is being submitted to the Project Ozone Database maintained by science-as-inquiry.org.