2024 40 CFR 50.3 – Reference conditions

2023 40 CFR 50.3 – Reference conditions

2022 40 CFR 50.3 – Reference conditions

2021 40 CFR 50.3 – Reference conditions

2020 40 CFR 50.3 – Reference conditions

2019 40 CFR 50.3 – Reference conditions

2016 40 CFR 50.3 – Reference conditions

2015 40 CFR 50.3 – Reference conditions

2014 40 CFR 50.3 – Reference conditions

2010 40 CFR 50.3 – Reference conditions

2009 40 CFR 50.3 – Reference conditions