Use short variable names with no whitespace. Underscores are usually a safe bet, so instead of "Number of new tuberculosis cases" use "incident_tb"
While it might be clear to the domain experts, I had no idea that "incident_tb" meant "Number of new tuberculosis cases" other than that it was placed next to that text.
I think the message is right, but honestly if they are sending you data to parse in PDF, you better just give up now. That person will most likely not have seen a README file before in their life, they're probably not even trying.