The data here presented is used to determine the accuracy of four open circuit respiration chambers designed to quantify methane emissions from goats

The tables Chamber1.xls, Chamber2.xls, Chamber3.xls and Chamber4.xls display methane (ppm) during the methane recovery test using a controlled source of methane emission (200 mL/min from a bottle with methane at 8%) during 30 min at six locations in each chamber (Figure 1). The green and yellow colours in the rows of the Excel files indicate the times when the bottle of the methane source was opened and closed, respectively. The tables include information on the air outflow rate from the chamber.

The R script Recovery.r includes the code for the calculation of the percentage of recovery by determination of the area under the curve.

The Excel file Analyser.xls shows dynamic data of the concentration of methane (ppm) and carbon dioxide (ppm) during a test to establish the response time and stability of the gas analyser.