soil profile plot function errors

[danicalombardozzi]

I encountered two error messages for us to consider:

1. An error message in the plot_soil_profile_timeseries function in the NEON_Simulation_Tutorial:

'PCT_SAND' is not present in all datasets.

I encountered this error for the WOOD site in 2018 for both soil temperature and soil moisture, although there are no plotting errors for this site in 2019 and 2020.

Is 'PCT_SAND' required for this function to plot properly? Does this suggest that 'PCT_SAND' is not included on the surface dataset?

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2. An error message when plotting incomplete years:

index 24 is out of bounds for axis 0 with size 1

Should we consider enabling plotting of partial years of data?