Examples for time series plots

[t-kramer]

Reopening the issue here.

@stefanoschiavon suggested the following:

• Figure 2 from https://doi.org/10.1016/j.buildenv.2017.12.011
• Figure 6 from https://doi.org/10.1016/j.indenv.2025.100088

I think we can find better ones. @praftery any suggestions?