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  --(1.488,3.118)--(1.492,3.113)--(1.496,3.107)--(1.499,3.102)--(1.503,3.097)--(1.507,3.091)%
  --(1.510,3.086)--(1.514,3.081)--(1.517,3.076)--(1.521,3.071)--(1.525,3.065)--(1.528,3.060)%
  --(1.532,3.055)--(1.536,3.050)--(1.539,3.045)--(1.543,3.040)--(1.546,3.035)--(1.550,3.031)%
  --(1.554,3.026)--(1.557,3.021)--(1.561,3.016)--(1.565,3.011)--(1.568,3.007)--(1.572,3.002)%
  --(1.575,2.997)--(1.579,2.992)--(1.583,2.988)--(1.586,2.983)--(1.590,2.979)--(1.594,2.974)%
  --(1.597,2.970)--(1.601,2.965)--(1.604,2.961)--(1.608,2.956)--(1.612,2.952)--(1.615,2.947)%
  --(1.619,2.943)--(1.622,2.938)--(1.626,2.934)--(1.630,2.930)--(1.633,2.926)--(1.637,2.921)%
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  --(1.662,2.892)--(1.666,2.888)--(1.670,2.884)--(1.673,2.880)--(1.677,2.876)--(1.680,2.872)%
  --(1.684,2.868)--(1.688,2.864)--(1.691,2.860)--(1.695,2.856)--(1.699,2.852)--(1.702,2.848)%
  --(1.706,2.844)--(1.709,2.840)--(1.713,2.836)--(1.717,2.833)--(1.720,2.829)--(1.724,2.825)%
  --(1.728,2.821)--(1.731,2.817)--(1.735,2.814)--(1.738,2.810)--(1.742,2.806)--(1.746,2.803)%
  --(1.749,2.799)--(1.753,2.795)--(1.757,2.792)--(1.760,2.788)--(1.764,2.784)--(1.767,2.781)%
  --(1.771,2.777)--(1.775,2.774)--(1.778,2.770)--(1.782,2.767)--(1.786,2.763)--(1.789,2.760)%
  --(1.793,2.756)--(1.796,2.753)--(1.800,2.749)--(1.804,2.746)--(1.807,2.742)--(1.811,2.739)%
  --(1.815,2.736)--(1.818,2.732)--(1.822,2.729)--(1.825,2.726)--(1.829,2.722)--(1.833,2.719)%
  --(1.836,2.716)--(1.840,2.712)--(1.844,2.709)--(1.847,2.706)--(1.851,2.702)--(1.854,2.699)%
  --(1.858,2.696)--(1.862,2.693)--(1.865,2.690)--(1.869,2.686)--(1.873,2.683)--(1.876,2.680)%
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  --(1.902,2.658)--(1.905,2.655)--(1.909,2.652)--(1.912,2.649)--(1.916,2.646)--(1.920,2.643)%
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  --(1.945,2.622)--(1.949,2.619)--(1.952,2.616)--(1.956,2.613)--(1.960,2.611)--(1.963,2.608)%
  --(1.967,2.605)--(1.970,2.602)--(1.974,2.599)--(1.978,2.596)--(1.981,2.593)--(1.985,2.591)%
  --(1.989,2.588)--(1.992,2.585)--(1.996,2.582)--(1.999,2.579)--(2.003,2.577)--(2.007,2.574)%
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  --(2.032,2.555)--(2.036,2.552)--(2.039,2.549)--(2.043,2.547)--(2.047,2.544)--(2.050,2.541)%
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  --(2.076,2.523)--(2.079,2.520)--(2.083,2.518)--(2.086,2.515)--(2.090,2.513)--(2.094,2.510)%
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  --(2.141,2.477)--(2.144,2.475)--(2.148,2.472)--(2.152,2.470)--(2.155,2.468)--(2.159,2.465)%
  --(2.163,2.463)--(2.166,2.460)--(2.170,2.458)--(2.173,2.456)--(2.177,2.453)--(2.181,2.451)%
  --(2.184,2.448)--(2.188,2.446)--(2.192,2.444)--(2.195,2.441)--(2.199,2.439)--(2.202,2.437)%
  --(2.206,2.434)--(2.210,2.432)--(2.213,2.430)--(2.217,2.427)--(2.221,2.425)--(2.224,2.423)%
  --(2.228,2.421)--(2.231,2.418)--(2.235,2.416)--(2.239,2.414)--(2.242,2.411)--(2.246,2.409)%
  --(2.250,2.407)--(2.253,2.405)--(2.257,2.402)--(2.260,2.400)--(2.264,2.398)--(2.268,2.396)%
  --(2.271,2.394)--(2.275,2.391)--(2.278,2.389)--(2.282,2.387)--(2.286,2.385)--(2.289,2.383)%
  --(2.293,2.380)--(2.297,2.378)--(2.300,2.376)--(2.304,2.374)--(2.307,2.372)--(2.311,2.370)%
  --(2.315,2.367)--(2.318,2.365)--(2.322,2.363)--(2.326,2.361)--(2.329,2.359)--(2.333,2.357)%
  --(2.336,2.355)--(2.340,2.353)--(2.344,2.350)--(2.347,2.348)--(2.351,2.346)--(2.355,2.344)%
  --(2.358,2.342)--(2.362,2.340)--(2.365,2.338)--(2.369,2.336)--(2.373,2.334)--(2.376,2.332)%
  --(2.380,2.330)--(2.384,2.328)--(2.387,2.326)--(2.391,2.324)--(2.394,2.322)--(2.398,2.320)%
  --(2.402,2.318)--(2.405,2.316)--(2.409,2.314)--(2.413,2.312)--(2.416,2.310)--(2.420,2.308)%
  --(2.423,2.306)--(2.427,2.304)--(2.431,2.302)--(2.434,2.300)--(2.438,2.298)--(2.442,2.296)%
  --(2.445,2.294)--(2.449,2.292)--(2.452,2.290)--(2.456,2.288)--(2.460,2.286)--(2.463,2.284)%
  --(2.467,2.282)--(2.471,2.280)--(2.474,2.278)--(2.478,2.276)--(2.481,2.274)--(2.485,2.273)%
  --(2.489,2.271)--(2.492,2.269)--(2.496,2.267)--(2.500,2.265)--(2.503,2.263)--(2.507,2.261)%
  --(2.510,2.259)--(2.514,2.257)--(2.518,2.256)--(2.521,2.254)--(2.525,2.252)--(2.529,2.250)%
  --(2.532,2.248)--(2.536,2.246)--(2.539,2.245)--(2.543,2.243)--(2.547,2.241)--(2.550,2.239)%
  --(2.554,2.237)--(2.558,2.235)--(2.561,2.234)--(2.565,2.232)--(2.568,2.230)--(2.572,2.228)%
  --(2.576,2.226)--(2.579,2.225)--(2.583,2.223)--(2.587,2.221)--(2.590,2.219)--(2.594,2.217)%
  --(2.597,2.216)--(2.601,2.214)--(2.605,2.212)--(2.608,2.210)--(2.612,2.209)--(2.616,2.207)%
  --(2.619,2.205)--(2.623,2.203)--(2.626,2.202)--(2.630,2.200)--(2.634,2.198)--(2.637,2.196)%
  --(2.641,2.195)--(2.645,2.193)--(2.648,2.191)--(2.652,2.189)--(2.655,2.188)--(2.659,2.186)%
  --(2.663,2.184)--(2.666,2.183)--(2.670,2.181)--(2.674,2.179)--(2.677,2.178)--(2.681,2.176)%
  --(2.684,2.174)--(2.688,2.172)--(2.692,2.171)--(2.695,2.169)--(2.699,2.167)--(2.703,2.166)%
  --(2.706,2.164)--(2.710,2.162)--(2.713,2.161)--(2.717,2.159)--(2.721,2.157)--(2.724,2.156)%
  --(2.728,2.154)--(2.732,2.153)--(2.735,2.151)--(2.739,2.149)--(2.742,2.148)--(2.746,2.146)%
  --(2.750,2.144)--(2.753,2.143)--(2.757,2.141)--(2.761,2.140)--(2.764,2.138)--(2.768,2.136)%
  --(2.771,2.135)--(2.775,2.133)--(2.779,2.132)--(2.782,2.130)--(2.786,2.128)--(2.790,2.127)%
  --(2.793,2.125)--(2.797,2.124)--(2.800,2.122)--(2.804,2.120)--(2.808,2.119)--(2.811,2.117)%
  --(2.815,2.116)--(2.819,2.114)--(2.822,2.113)--(2.826,2.111)--(2.829,2.109)--(2.833,2.108)%
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  --(2.858,2.097)--(2.862,2.096)--(2.866,2.094)--(2.869,2.093)--(2.873,2.091)--(2.877,2.089)%
  --(2.880,2.088)--(2.884,2.086)--(2.887,2.085)--(2.891,2.083)--(2.895,2.082)--(2.898,2.080)%
  --(2.902,2.079)--(2.906,2.077)--(2.909,2.076)--(2.913,2.074)--(2.916,2.073)--(2.920,2.072)%
  --(2.924,2.070)--(2.927,2.069)--(2.931,2.067)--(2.934,2.066)--(2.938,2.064)--(2.942,2.063)%
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  --(3.163,1.978)--(3.166,1.977)--(3.170,1.975)--(3.174,1.974)--(3.177,1.973)--(3.181,1.971)%
  --(3.185,1.970)--(3.188,1.969)--(3.192,1.967)--(3.195,1.966)--(3.199,1.965)--(3.203,1.963)%
  --(3.206,1.962)--(3.210,1.961)--(3.214,1.960)--(3.217,1.958)--(3.221,1.957)--(3.224,1.956)%
  --(3.228,1.954)--(3.232,1.953)--(3.235,1.952)--(3.239,1.951)--(3.243,1.949)--(3.246,1.948)%
  --(3.250,1.947)--(3.253,1.945)--(3.257,1.944)--(3.261,1.943)--(3.264,1.942)--(3.268,1.940)%
  --(3.272,1.939)--(3.275,1.938)--(3.279,1.937)--(3.282,1.935)--(3.286,1.934)--(3.290,1.933)%
  --(3.293,1.932)--(3.297,1.930)--(3.301,1.929)--(3.304,1.928)--(3.308,1.927)--(3.311,1.925)%
  --(3.315,1.924)--(3.319,1.923)--(3.322,1.922)--(3.326,1.921)--(3.330,1.919)--(3.333,1.918)%
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  --(3.359,1.910)--(3.362,1.908)--(3.366,1.907)--(3.369,1.906)--(3.373,1.905)--(3.377,1.903)%
  --(3.380,1.902)--(3.384,1.901)--(3.388,1.900)--(3.391,1.899)--(3.395,1.897)--(3.398,1.896)%
  --(3.402,1.895)--(3.406,1.894)--(3.409,1.893)--(3.413,1.892)--(3.417,1.890)--(3.420,1.889)%
  --(3.424,1.888)--(3.427,1.887)--(3.431,1.886)--(3.435,1.884)--(3.438,1.883)--(3.442,1.882)%
  --(3.446,1.881)--(3.449,1.880)--(3.453,1.879)--(3.456,1.877)--(3.460,1.876)--(3.464,1.875)%
  --(3.467,1.874)--(3.471,1.873)--(3.475,1.872)--(3.478,1.870)--(3.482,1.869)--(3.485,1.868);
\gpcolor{color=gp lt color border}
\gpsetdashtype{gp dt solid}
\draw[gp path] (0.952,5.816)--(0.952,0.985)--(8.197,0.985)--(8.197,5.816)--cycle;
\node[gp node center,rotate=-270.0] at (0.108,3.400) {$v_{\text{eff}}^{(2)}/k_B T$};
\node[gp node center] at (4.574,0.215) {$\tilde{r}(\epsilon) $};
%% coordinates of the plot area
\gpdefrectangularnode{gp plot 1}{\pgfpoint{0.952cm}{0.985cm}}{\pgfpoint{8.197cm}{5.816cm}}
\end{tikzpicture}
%% gnuplot variables
\end{document}