> 0.5 contour
273.213	11.9647	0.5
273.296	11.9568	0.5
273.359	11.9427	0.5
273.38	11.9396	0.5
273.463	11.8997	0.5
273.511	11.8593	0.5
273.546	11.8148	0.5
273.572	11.776	0.5
273.601	11.6927	0.5
273.606	11.6093	0.5
273.591	11.526	0.5
273.546	11.4522	0.5
273.54	11.4427	0.5
273.463	11.3707	0.5
273.441	11.3593	0.5
273.38	11.3256	0.5
273.296	11.3079	0.5
273.213	11.3026	0.5
273.13	11.3557	0.5
273.124	11.3593	0.5
273.046	11.4125	0.5
273.019	11.4427	0.5
272.974	11.526	0.5
272.963	11.594	0.5
272.959	11.6093	0.5
272.963	11.6646	0.5
272.964	11.6927	0.5
272.988	11.776	0.5
273.046	11.8539	0.5
273.051	11.8593	0.5
273.13	11.9178	0.5
273.176	11.9427	0.5
273.213	11.9647	0.5
> 1 contour
273.213	11.8351	1
273.296	11.8404	1
273.38	11.8051	1
273.415	11.776	1
273.462	11.6927	1
273.463	11.6802	1
273.472	11.6093	1
273.463	11.588	1
273.445	11.526	1
273.38	11.4616	1
273.3	11.4427	1
273.296	11.4413	1
273.239	11.4427	1
273.213	11.443	1
273.13	11.5025	1
273.109	11.526	1
273.074	11.6093	1
273.085	11.6927	1
273.13	11.7567	1
273.145	11.776	1
273.213	11.8351	1
> 1.5 contour
273.296	11.7939	1.5
273.326	11.776	1.5
273.38	11.7388	1.5
273.418	11.6927	1.5
273.432	11.6093	1.5
273.38	11.5299	1.5
273.374	11.526	1.5
273.296	11.4827	1.5
273.213	11.5051	1.5
273.188	11.526	1.5
273.133	11.6093	1.5
273.147	11.6927	1.5
273.213	11.7675	1.5
273.238	11.776	1.5
273.296	11.7939	1.5
> 2 contour
273.213	11.717	2
273.296	11.761	2
273.375	11.6927	2
273.38	11.6748	2
273.398	11.6093	2
273.38	11.5815	2
273.301	11.526	2
273.296	11.5232	2
273.288	11.526	2
273.213	11.5581	2
273.172	11.6093	2
273.191	11.6927	2
273.213	11.717	2
> 2.5 contour
273.296	11.7367	2.5
273.347	11.6927	2.5
273.37	11.6093	2.5
273.296	11.5439	2.5
273.213	11.6067	2.5
273.211	11.6093	2.5
273.213	11.6174	2.5
273.231	11.6927	2.5
273.296	11.7367	2.5