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Multiple sources of volunteered geographic information strengthen holistic estimates of lake visitation

Fig 3

Scatterplots (lower-left), density plots (diagonal), and Pearson’s correlation coefficients (upper-right) comparing VGI datasets.

Statistical significance is indicated by *(<0.1), **(<0.01), and ***(<0.001).

doi: https://doi.org/10.1371/journal.pone.0341808.g003