RMSE: 9.6m, bias: 2.9m, (10.0%) outperforms the UMD map with RMSE: 12.0 m, bias: -5.4 m (-19.3%). f) Costa Rica (from tile region 16PHS with average height 16.7m). Our map with RMSE: 9.2m, bias: 5.9 m (35.4%) yields a higher error than the UMD map with RMSE: 8.1m, bias: -3.0 m (-18.0%).