> print(rf)

Call:
randomForest(formula = lilv ~ ., data = trainData, ntree = 100,      proximity = TRUE)
               Type of random forest: regression
                     Number of trees: 100
No. of variables tried at each split: 2

          Mean of squared residuals: 0.0005192696
                    % Var explained: 80.1
R语言随机森林作预测，上面的这个结果是拟合的好还是差呢？
新人，求助！