This may be overly simplistic, but public companies must report once every quarter. Just change the report from monthly to quarterly - data can be extrapolated based on previous reports, new equipment purchases, supply purchases etc.
Reminds me of the old adage: Garbage In = Garbage Out. More correctly, it is a reminder to take all studies and surveys and statistics information with a healthy dose of skepticism UNLESS you know the real constituents of the data. Without the data constituent knowledge, you can only extrapolate gross trends.