> summary(gbr)
     \tYear         Month         Country          Temperature (C)   Rainfall (mm)   
 Min.   :1991   Min.   : 1.00   Length:300         Min.   :-0.1819   Min.   : 19.42  
 1st Qu.:1997   1st Qu.: 3.75   Class :character   1st Qu.: 5.2719   1st Qu.: 73.67  
 Median :2003   Median : 6.50   Mode  :character   Median : 8.7781   Median : 97.09  
 Mean   :2003   Mean   : 6.50                      Mean   : 9.1550   Mean   :104.00  
 3rd Qu.:2009   3rd Qu.: 9.25                      3rd Qu.:13.0889   3rd Qu.:126.41  
 Max.   :2015   Max.   :12.00                      Max.   :17.3942   Max.   :233.08  
> summary(usa)
     \tYear         Month         Country          Temperature (C)   Rainfall (mm)  
 Min.   :1991   Min.   : 1.00   Length:600         Min.   :-6.8235   Min.   :27.40  
 1st Qu.:1997   1st Qu.: 3.75   Class :character   1st Qu.:-0.7086   1st Qu.:47.64  
 Median :2003   Median : 6.50   Mode  :character   Median : 7.3800   Median :56.11  
 Mean   :2003   Mean   : 6.50                      Mean   : 7.5545   Mean   :56.11  
 3rd Qu.:2009   3rd Qu.: 9.25                      3rd Qu.:16.6396   3rd Qu.:63.76  
 Max.   :2015   Max.   :12.00                      Max.   :21.4416   Max.   :85.12