Symbol Coverage is the number of executed Sequence Points in that scope divided by the total number of Sequence Points in that scope.

Branch Coverage is the number of executed Branch Points in that scope divided by the total number of Branch Points in that scope.

Method Coverage for a method is either 100% or 0%. Method Coverage for everything else is the number of called methods in that scope divided by the total number of methods in that scope.

Both average and maximum Cyclomatic complexity are calculated.

Average Cyclomatic Complexity for a method is the Cyclomatic Complexity of the method. Average Cyclomatic Complexity for everything else is the sum of the Cyclomatic Complexities of its children divided by the number of children.

Maximum Cyclomatic Complexity for a method is the Cyclomatic Complexity of the method. Maximum Cyclomatic Complexity for everything else is the maximum Cyclomatic Complexity of the child with the highest maximum Cyclomatic Complexity.