0
Contour Line, Major
YES
30
Contour Line, Minor
60
90
120
150
Contour Line, Intermediate
180
210
240
270
300
330
360
390
420
450
480
510
540
570
600
630
660
690
720
750
780
810
840
870
900
930
960
990
1020
1050
1080
1110
1140
1170