0 0 LESS THAN 5 KM
1 1 5 TO LESS THAN 10 KM
2 2 10 TO LESS THAN 15 KM
3 3 15 TO LESS THAN 20 KM
4 4 20 TO LESS THAN 25 KM
5 5 25 TO LESS THAN 30 KM
6 6 30 TO LESS THAN 35 KM
7 7 35 TO LESS THAN 40 KM
8 8 40 TO LESS THAN 50 KM
9 9 50 KM AND GREATER
10 10 UNDETERMINED
15 15 MISSING VALUE
