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Table 3 Validation of UVEry from ATPRK vs. NASA grids using UVMRP stations by region (1998–2012)

From: Spatiotemporal exposure modeling of ambient erythemal ultraviolet radiation

     % relative improvement
Region Prediction model MAE RMSE MAE RMSE
Northwest NASA 10.8 10.8 -- --
ATPRK 9.9 9.9 8.7 8.7
Pacific mid-west NASA 15.6 16.8 -- --
ATPRK 11.6 12.2 25.5 27.4
Southwest NASA 23.6 26.4 -- --
ATPRK 18.0 22.4 23.8 15.3
North central NASA 13.4 15.1 -- --
ATPRK 9.8 11.5 27.4 23.7
Mid-central NASA 21.3 23.7 -- --
ATPRK 17.2 20.0 19.3 15.8
South central NASA 19.6 22.9 -- --
ATPRK 16.7 19.4 14.6 15.5
Northeast NASA 17.4 19.2 -- --
ATPRK 13.9 16.5 19.7 14.1
Mid-Atlantic NASA 14.9 16.4 -- --
ATPRK 14.8 15.8 0.6 3.6
Southeast NASA 36.9 43.3 -- --
ATPRK 25.3 30.6 31.5 29.4
  1. Abbreviations: ATPRK area-to-point residual kriging, MAE mean absolute error, NASA National Aeronautics and Space Administration, RMSE root mean square error