double GetPotentialValue(int& ix, int& iy) {
double PotentialArray[21][58] = {
//--- PotentialArray[0][58] , x = 0 um --------
{
-1.711e-09,   0.003351,   0.006709,   0.01007,   0.01345,
0.01685,   0.02027,   0.02371,   0.02719,   0.03071,
0.03427,   0.03788,   0.04154,   0.04526,   0.04905,
0.05291,   0.05685,   0.06088,   0.06502,   0.06926,
0.07361,   0.07809,   0.08272,   0.0875,   0.09244,
0.09758,   0.1029,   0.1084,   0.1142,   0.1203,
0.1267,   0.1333,   0.1404,   0.1478,   0.1557,
0.164,   0.173,   0.1825,   0.1927,   0.2038,
0.2157,   0.2287,   0.2428,   0.2584,   0.2755,
0.2945,   0.3157,   0.3395,   0.3666,   0.3973,
0.433,   0.4746,   0.5241,   0.5839,   0.6577,
0.7504,   0.8655,   1.001
},
//--- PotentialArray[1][58] , x = 20 um --------
{
3.476e-07,   0.003316,   0.006636,   0.009966,   0.01331,
0.01667,   0.02005,   0.02346,   0.02689,   0.03037,
0.03388,   0.03744,   0.04105,   0.04472,   0.04846,
0.05226,   0.05614,   0.06011,   0.06416,   0.06833,
0.07259,   0.07698,   0.08151,   0.08617,   0.09099,
0.09599,   0.1012,   0.1065,   0.1121,   0.118,
0.1241,   0.1305,   0.1372,   0.1443,   0.1518,
0.1597,   0.1681,   0.177,   0.1866,   0.1968,
0.2077,   0.2195,   0.2323,   0.2462,   0.2612,
0.2778,   0.2959,   0.3159,   0.338,   0.3625,
0.3897,   0.4201,   0.4538,   0.491,   0.5314,
0.5731,   0.6055,   0.6221
},
//--- PotentialArray[2][58] , x = 40 um --------
{
3.146e-07,   0.003213,   0.006431,   0.009657,   0.01289,
0.01614,   0.01942,   0.02271,   0.02603,   0.02938,
0.03277,   0.03619,   0.03966,   0.04318,   0.04676,
0.0504,   0.05409,   0.05786,   0.06171,   0.06565,
0.06967,   0.07379,   0.07803,   0.08238,   0.08684,
0.09146,   0.0962,   0.1011,   0.1062,   0.1115,
0.1169,   0.1226,   0.1285,   0.1347,   0.1411,
0.1478,   0.1548,   0.1622,   0.1699,   0.178,
0.1865,   0.1955,   0.2049,   0.2148,   0.2252,
0.2361,   0.2475,   0.2594,   0.2717,   0.2844,
0.2973,   0.3101,   0.3226,   0.3341,   0.3441,
0.3521,   0.3573,   0.3592
},
//--- PotentialArray[3][58] , x = 60 um --------
{
2.525e-07,   0.003052,   0.006108,   0.009169,   0.01224,
0.01532,   0.01842,   0.02154,   0.02467,   0.02783,
0.03102,   0.03424,   0.03749,   0.04078,   0.04411,
0.04749,   0.05091,   0.05439,   0.05792,   0.06152,
0.06517,   0.0689,   0.07271,   0.07659,   0.08055,
0.08461,   0.08875,   0.093,   0.09735,   0.1018,
0.1064,   0.111,   0.1158,   0.1208,   0.1258,
0.1309,   0.1362,   0.1416,   0.1471,   0.1526,
0.1583,   0.1639,   0.1696,   0.1752,   0.1806,
0.1858,   0.1907,   0.1951,   0.1987,   0.2014,
0.203,   0.203,   0.201,   0.1968,   0.1901,
0.1809,   0.1726,   0.1721
},
//--- PotentialArray[4][58] , x = 80 um --------
{
1.773e-07,   0.002844,   0.005691,   0.008542,   0.0114,
0.01426,   0.01714,   0.02003,   0.02293,   0.02584,
0.02878,   0.03174,   0.03471,   0.03772,   0.04075,
0.0438,   0.04689,   0.05001,   0.05316,   0.05635,
0.05957,   0.06283,   0.06613,   0.06947,   0.07286,
0.07628,   0.07974,   0.08324,   0.08678,   0.09035,
0.09395,   0.09758,   0.1012,   0.1049,   0.1085,
0.1122,   0.1158,   0.1193,   0.1228,   0.1261,
0.1293,   0.1322,   0.1349,   0.1372,   0.1391,
0.1404,   0.141,   0.1407,   0.1393,   0.1366,
0.1323,   0.1258,   0.1168,   0.1043,   0.08701,
0.06426,   0.03383,   -0.0002073
},
//--- PotentialArray[5][58] , x = 100 um --------
{
1.001e-07,   0.002604,   0.005209,   0.007817,   0.01043,
0.01304,   0.01566,   0.01829,   0.02092,   0.02357,
0.02622,   0.02888,   0.03155,   0.03423,   0.03693,
0.03964,   0.04235,   0.04509,   0.04783,   0.05058,
0.05335,   0.05613,   0.05891,   0.0617,   0.0645,
0.06729,   0.07008,   0.07287,   0.07564,   0.07839,
0.08111,   0.08379,   0.08643,   0.08899,   0.09148,
0.09388,   0.09615,   0.09827,   0.1002,   0.102,
0.1035,   0.1047,   0.1055,   0.106,   0.106,
0.1055,   0.1044,   0.1026,   0.09995,   0.09649,
0.09212,   0.08672,   0.08031,   0.07294,   0.06489,
0.0566,   0.05021,   0.04711
},
//--- PotentialArray[6][58] , x = 120 um --------
{
2.923e-08,   0.002346,   0.004692,   0.007039,   0.009387,
0.01174,   0.01409,   0.01644,   0.01879,   0.02114,
0.0235,   0.02585,   0.02821,   0.03056,   0.03292,
0.03527,   0.03762,   0.03997,   0.04231,   0.04464,
0.04697,   0.04928,   0.05158,   0.05385,   0.05611,
0.05834,   0.06053,   0.06269,   0.0648,   0.06685,
0.06884,   0.07076,   0.07259,   0.07431,   0.07594,
0.07742,   0.07876,   0.07992,   0.0809,   0.08166,
0.08218,   0.08243,   0.08238,   0.08201,   0.08129,
0.08018,   0.07869,   0.07678,   0.07447,   0.07176,
0.06869,   0.06538,   0.06193,   0.05854,   0.0555,
0.05297,   0.05134,   0.05075
},
//--- PotentialArray[7][58] , x = 140 um --------
{
-3.002e-08,   0.002084,   0.004167,   0.00625,   0.008331,
0.01041,   0.01249,   0.01456,   0.01663,   0.0187,
0.02076,   0.02281,   0.02486,   0.0269,   0.02892,
0.03094,   0.03294,   0.03493,   0.03689,   0.03884,
0.04077,   0.04266,   0.04453,   0.04636,   0.04815,
0.0499,   0.0516,   0.05324,   0.05481,   0.05632,
0.05774,   0.05908,   0.06031,   0.06143,   0.06244,
0.06331,   0.06403,   0.06459,   0.06498,   0.06517,
0.06515,   0.0649,   0.06442,   0.06368,   0.06268,
0.06139,   0.05981,   0.05795,   0.05579,   0.05334,
0.05061,   0.04762,   0.04439,   0.04098,   0.03749,
0.03397,   0.03127,   0.03081
},
//--- PotentialArray[8][58] , x = 160 um --------
{
-7.48e-08,   0.001829,   0.003656,   0.005482,   0.007304,
0.009123,   0.01094,   0.01274,   0.01454,   0.01634,
0.01812,   0.01989,   0.02165,   0.02339,   0.02511,
0.02682,   0.02851,   0.03017,   0.03181,   0.03341,
0.03499,   0.03653,   0.03803,   0.03948,   0.04089,
0.04225,   0.04355,   0.04478,   0.04595,   0.04704,
0.04804,   0.04896,   0.04978,   0.05048,   0.05108,
0.05155,   0.05189,   0.05209,   0.05213,   0.05201,
0.05171,   0.05123,   0.05056,   0.04969,   0.0486,
0.04729,   0.04574,   0.04394,   0.04187,   0.03952,
0.03686,   0.03382,   0.03032,   0.02625,   0.02134,
0.01544,   0.008058,   -4.779e-05
},
//--- PotentialArray[9][58] , x = 180 um --------
{
-1.051e-07,   0.001588,   0.003175,   0.004759,   0.00634,
0.007915,   0.009483,   0.01104,   0.01259,   0.01413,
0.01566,   0.01717,   0.01867,   0.02014,   0.0216,
0.02303,   0.02444,   0.02582,   0.02717,   0.02849,
0.02977,   0.03102,   0.03222,   0.03337,   0.03447,
0.03552,   0.03651,   0.03744,   0.03829,   0.03908,
0.03978,   0.0404,   0.04094,   0.04137,   0.0417,
0.04193,   0.04204,   0.04203,   0.04189,   0.04162,
0.04121,   0.04066,   0.03996,   0.03911,   0.03809,
0.03691,   0.03557,   0.03406,   0.03238,   0.03052,
0.0285,   0.0263,   0.02396,   0.0215,   0.01898,
0.01652,   0.01467,   0.0138
},
//--- PotentialArray[10][58] , x = 200 um --------
{
-1.225e-07,   0.001369,   0.002736,   0.0041,   0.005459,
0.006812,   0.008158,   0.009494,   0.01082,   0.01213,
0.01343,   0.01471,   0.01598,   0.01722,   0.01844,
0.01964,   0.02081,   0.02196,   0.02307,   0.02414,
0.02519,   0.02619,   0.02714,   0.02805,   0.02892,
0.02973,   0.03048,   0.03118,   0.03181,   0.03237,
0.03287,   0.03329,   0.03363,   0.03388,   0.03405,
0.03413,   0.03411,   0.034,   0.03378,   0.03346,
0.03303,   0.03249,   0.03184,   0.03107,   0.0302,
0.02921,   0.02812,   0.02694,   0.02566,   0.02431,
0.02291,   0.02149,   0.0201,   0.0188,   0.01767,
0.01675,   0.01617,   0.01597
},
//--- PotentialArray[11][58] , x = 220 um --------
{
-1.298e-07,   0.001173,   0.002344,   0.003512,   0.004675,
0.005831,   0.00698,   0.008118,   0.009247,   0.01036,
0.01146,   0.01254,   0.01361,   0.01466,   0.01568,
0.01668,   0.01765,   0.01859,   0.0195,   0.02038,
0.02123,   0.02203,   0.0228,   0.02352,   0.0242,
0.02483,   0.02541,   0.02593,   0.0264,   0.02681,
0.02715,   0.02743,   0.02765,   0.02779,   0.02786,
0.02785,   0.02777,   0.0276,   0.02736,   0.02703,
0.02661,   0.02611,   0.02553,   0.02486,   0.0241,
0.02326,   0.02233,   0.02133,   0.02026,   0.01911,
0.01791,   0.01664,   0.01534,   0.014,   0.01268,
0.01138,   0.01039,   0.01022
},
//--- PotentialArray[12][58] , x = 240 um --------
{
-1.3e-07,   0.001002,   0.002002,   0.002999,   0.003991,
0.004977,   0.005955,   0.006923,   0.007881,   0.008826,
0.009756,   0.01067,   0.01157,   0.01244,   0.0133,
0.01413,   0.01494,   0.01572,   0.01647,   0.01719,
0.01787,   0.01853,   0.01914,   0.01972,   0.02025,
0.02074,   0.02119,   0.02159,   0.02194,   0.02224,
0.02248,   0.02267,   0.0228,   0.02287,   0.02288,
0.02283,   0.02271,   0.02253,   0.02228,   0.02197,
0.02158,   0.02113,   0.02061,   0.02002,   0.01936,
0.01862,   0.01782,   0.01694,   0.01598,   0.01494,
0.01381,   0.01257,   0.01119,   0.00962,   0.007778,
0.005602,   0.00292,   -1.756e-05
},
//--- PotentialArray[13][58] , x = 260 um --------
{
-1.25e-07,   0.0008559,   0.00171,   0.002561,   0.003407,
0.004248,   0.005081,   0.005904,   0.006718,   0.00752,
0.008307,   0.009079,   0.009835,   0.01057,   0.01129,
0.01198,   0.01266,   0.0133,   0.01392,   0.01452,
0.01508,   0.01561,   0.01611,   0.01657,   0.017,
0.01738,   0.01773,   0.01804,   0.0183,   0.01852,
0.0187,   0.01882,   0.0189,   0.01893,   0.01891,
0.01883,   0.0187,   0.01852,   0.01829,   0.018,
0.01766,   0.01726,   0.01681,   0.0163,   0.01574,
0.01513,   0.01446,   0.01374,   0.01297,   0.01215,
0.01128,   0.01036,   0.009406,   0.008421,   0.007432,
0.006478,   0.005766,   0.005431
},
//--- PotentialArray[14][58] , x = 280 um --------
{
-1.176e-07,   0.0007337,   0.001466,   0.002195,   0.00292,
0.003639,   0.004351,   0.005055,   0.005749,   0.006432,
0.007102,   0.007757,   0.008398,   0.009022,   0.009626,
0.01021,   0.01078,   0.01132,   0.01183,   0.01233,
0.01279,   0.01323,   0.01363,   0.01401,   0.01435,
0.01466,   0.01494,   0.01518,   0.01538,   0.01555,
0.01567,   0.01576,   0.0158,   0.0158,   0.01576,
0.01568,   0.01555,   0.01538,   0.01517,   0.01491,
0.01461,   0.01426,   0.01388,   0.01345,   0.01298,
0.01248,   0.01193,   0.01136,   0.01077,   0.01015,
0.009515,   0.008889,   0.008283,   0.00772,   0.007237,
0.00685,   0.006606,   0.00652
},
//--- PotentialArray[15][58] , x = 300 um --------
{
-1.093e-07,   0.000634,   0.001266,   0.001896,   0.002522,
0.003143,   0.003757,   0.004363,   0.004961,   0.005548,
0.006123,   0.006684,   0.007233,   0.007766,   0.008281,
0.008778,   0.009257,   0.009715,   0.01015,   0.01056,
0.01095,   0.01132,   0.01166,   0.01197,   0.01225,
0.0125,   0.01272,   0.01291,   0.01307,   0.0132,
0.01329,   0.01335,   0.01337,   0.01336,   0.01331,
0.01322,   0.0131,   0.01294,   0.01275,   0.01252,
0.01226,   0.01195,   0.01162,   0.01125,   0.01085,
0.01041,   0.009946,   0.009452,   0.008932,   0.008388,
0.00782,   0.007235,   0.006634,   0.006025,   0.005426,
0.004843,   0.004405,   0.004325
},
//--- PotentialArray[16][58] , x = 320 um --------
{
-1.011e-07,   0.0005552,   0.001109,   0.00166,   0.002208,
0.002751,   0.003288,   0.003817,   0.004339,   0.00485,
0.005351,   0.00584,   0.006316,   0.006778,   0.007224,
0.007654,   0.008067,   0.008461,   0.008835,   0.009189,
0.009521,   0.00983,   0.01012,   0.01038,   0.01061,
0.01082,   0.01101,   0.01116,   0.01129,   0.01139,
0.01146,   0.0115,   0.01151,   0.01149,   0.01143,
0.01135,   0.01124,   0.01109,   0.01092,   0.01071,
0.01047,   0.0102,   0.009907,   0.00958,   0.009223,
0.008837,   0.008422,   0.007977,   0.007499,   0.006987,
0.006438,   0.005842,   0.005186,   0.00445,   0.003592,
0.002584,   0.001347,   -8.482e-06
},
//--- PotentialArray[17][58] , x = 340 um --------
{
-9.399e-08,   0.0004957,   0.00099,   0.001482,   0.001971,
0.002455,   0.002934,   0.003405,   0.00387,   0.004325,
0.00477,   0.005204,   0.005627,   0.006036,   0.006431,
0.006811,   0.007175,   0.007522,   0.00785,   0.00816,
0.008451,   0.00872,   0.008969,   0.009195,   0.009399,
0.009578,   0.009734,   0.009866,   0.009971,   0.01005,
0.01011,   0.01013,   0.01014,   0.01011,   0.01006,
0.009977,   0.00987,   0.009736,   0.009575,   0.009388,
0.009174,   0.008934,   0.008669,   0.008379,   0.008064,
0.007726,   0.007364,   0.00698,   0.006575,   0.006148,
0.005702,   0.005238,   0.004759,   0.00427,   0.003782,
0.003315,   0.002966,   0.002802
},
//--- PotentialArray[18][58] , x = 360 um --------
{
-8.744e-08,   0.0004542,   0.0009071,   0.001358,   0.001806,
0.002249,   0.002687,   0.003118,   0.003543,   0.003959,
0.004366,   0.004762,   0.005148,   0.00552,   0.00588,
0.006225,   0.006556,   0.00687,   0.007168,   0.007448,
0.00771,   0.007953,   0.008176,   0.008378,   0.00856,
0.00872,   0.008858,   0.008973,   0.009065,   0.009133,
0.009178,   0.009199,   0.009195,   0.009168,   0.009115,
0.009038,   0.008937,   0.008812,   0.008663,   0.008489,
0.008293,   0.008074,   0.007833,   0.00757,   0.007288,
0.006986,   0.006667,   0.006332,   0.005987,   0.005631,
0.005271,   0.004916,   0.004574,   0.004259,   0.003988,
0.003772,   0.003636,   0.003588
},
//--- PotentialArray[19][58] , x = 380 um --------
{
-8.22e-08,   0.0004297,   0.0008582,   0.001285,   0.001708,
0.002127,   0.002542,   0.002949,   0.003351,   0.003744,
0.004128,   0.004502,   0.004865,   0.005217,   0.005555,
0.00588,   0.006192,   0.006487,   0.006767,   0.007029,
0.007275,   0.007502,   0.00771,   0.007899,   0.008069,
0.008217,   0.008344,   0.00845,   0.008534,   0.008597,
0.008636,   0.008653,   0.008647,   0.008618,   0.008566,
0.008492,   0.008394,   0.008274,   0.008131,   0.007966,
0.007779,   0.007571,   0.007341,   0.007092,   0.006823,
0.006534,   0.006228,   0.005904,   0.005565,   0.005209,
0.004841,   0.004459,   0.004068,   0.003673,   0.003279,
0.002899,   0.002589,   0.002564
},
//--- PotentialArray[20][58] , x = 400 um --------
{
-3.235e-08,   0.0004215,   0.000842,   0.00126,   0.001676,
0.002087,   0.002493,   0.002893,   0.003287,   0.003672,
0.004049,   0.004416,   0.004772,   0.005116,   0.005448,
0.005767,   0.006071,   0.00636,   0.006634,   0.006891,
0.007131,   0.007353,   0.007557,   0.007742,   0.007906,
0.008051,   0.008175,   0.008278,   0.00836,   0.00842,
0.008457,   0.008473,   0.008466,   0.008437,   0.008386,
0.008312,   0.008215,   0.008096,   0.007955,   0.007793,
0.007609,   0.007403,   0.007177,   0.00693,   0.006663,
0.006375,   0.006068,   0.005739,   0.005389,   0.005015,
0.004613,   0.004179,   0.003702,   0.003168,   0.002552,
0.001827,   0.000964,   -7.632e-07
},
 };
return PotentialArray[ix][iy];
}