<page_title> Smart thermostat </page_title> <section_title> Internal Studies </section_title> <table> <cell> 735 <col_header> Sample Size </col_header> </cell> <cell> 624 <col_header> Sample Size </col_header> </cell> </table>
The study had a sample size of 735 homes for gas usage analysis and 624 homes for electrical analysis.