137.20 - 1ST ORDER MOUNTAIN BASELINE (Largest)
137.21 - 2ND ORDER MOUNTAIN BASELINE
137.22 - 3RD ORDER MOUNTAIN BASELINE
137.24 - LARGE AREA BASELINE
137.25 - SMALL AREA BASELINE
137.26 - DESERT BASELINE
137.27 - LARGE ISLAND/ISLAND GROUP BASELINE
137.28 - PENINSULA BASELINE
137.29 - SMALL ISLAND BASELINE
137.32 - SEA BASELINE
137.33 - STRAIT/GULF/BAY BASELINE
137.34 - LARGE REEF BASELINE
137.35 - SMALL REEF BASELINE