The intervallic contents of Set 1, Set 2 and their relation are given as 7 digits, each representing the occurrence frequency of one of the 7 basic interval types, in the order (left to right):
The distance covered is obtained by taking the 7-digit vectors as coordinates in a 7-dimensional grid and computing the sum of the distances "Set 1 - Relation" and "Relation - Set 2". The area is that of the triangle formed by the three vectors. For more info see The neddiH dlroW of Intervals (1990).