> 0.5 contour -Z0.5
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> 1 contour -Z1
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> 1.5 contour -Z1.5
-122.2855	37.9845382438	1.5
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> 2 contour -Z2
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> 2.5 contour -Z2.5
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> 3 contour -Z3
-122.1855	37.8913157849	3
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