> 0.5 contour
20.1977	2.58255	0.5
20.281	2.55481	0.5
20.3097	2.53217	0.5
20.3643	2.49242	0.5
20.4347	2.44883	0.5
20.4477	2.42316	0.5
20.4677	2.3655	0.5
20.4477	2.30455	0.5
20.4417	2.28217	0.5
20.4477	2.26671	0.5
20.4911	2.19883	0.5
20.4579	2.1155	0.5
20.4477	2.10145	0.5
20.3915	2.03217	0.5
20.3895	1.94883	0.5
20.3643	1.92631	0.5
20.281	1.90678	0.5
20.1977	1.89796	0.5
20.1143	1.89546	0.5
20.0512	1.94883	0.5
20.031	1.98675	0.5
19.9736	2.03217	0.5
19.9477	2.05849	0.5
19.9038	2.1155	0.5
19.8753	2.19883	0.5
19.871	2.28217	0.5
19.886	2.3655	0.5
19.9477	2.41837	0.5
19.992	2.44883	0.5
20.031	2.4842	0.5
20.1143	2.53188	0.5
20.1156	2.53217	0.5
20.1977	2.58255	0.5
> 1 contour
20.1143	2.46309	1
20.1977	2.47017	1
20.2521	2.44883	1
20.281	2.42887	1
20.3148	2.3655	1
20.3496	2.28217	1
20.3643	2.20825	1
20.369	2.19883	1
20.3643	2.19137	1
20.3169	2.1155	1
20.281	2.08386	1
20.1977	2.05235	1
20.1143	2.05972	1
20.0444	2.1155	1
20.031	2.1285	1
19.9825	2.19883	1
19.9717	2.28217	1
20.031	2.35127	1
20.0403	2.3655	1
20.0977	2.44883	1
20.1143	2.46309	1
> 1.5 contour
20.1143	2.40865	1.5
20.1977	2.42806	1.5
20.2641	2.3655	1.5
20.281	2.32741	1.5
20.3088	2.28217	1.5
20.3243	2.19883	1.5
20.281	2.14758	1.5
20.1977	2.11552	1.5
20.1143	2.12876	1.5
20.0431	2.19883	1.5
20.031	2.25415	1.5
20.0243	2.28217	1.5
20.031	2.28996	1.5
20.0803	2.3655	1.5
20.1143	2.40865	1.5
> 2 contour
20.1977	2.4003	2
20.2346	2.3655	2
20.2758	2.28217	2
20.281	2.20616	2
20.2823	2.19883	2
20.281	2.19731	2
20.1977	2.13896	2
20.1143	2.17623	2
20.0914	2.19883	2
20.0638	2.28217	2
20.1143	2.35719	2
20.1232	2.3655	2
20.1977	2.4003	2
> 2.5 contour
20.1977	2.37253	2.5
20.2051	2.3655	2.5
20.2595	2.28217	2.5
20.249	2.19883	2.5
20.1977	2.16239	2.5
20.1353	2.19883	2.5
20.1143	2.24924	2.5
20.1015	2.28217	2.5
20.1143	2.3013	2.5
20.1826	2.3655	2.5
20.1977	2.37253	2.5