parse earth-distance (in astronomical unit) table in cvs format to obtain earth-distance for a specific DOY: Following is the format of the csv file:

1,0.98331,61,0.99108,121,1.00756,181,1.01665,241,1.00992,301,0.99359
2,0.98330,62,0.99133,122,1.00781,182,1.01667,242,1.00969,302,0.99332
3,0.98330,63,0.99158,123,1.00806,183,1.01668,243,1.00946,303,0.99306
4,0.98330,64,0.99183,124,1.00831,184,1.01670,244,1.00922,304,0.99279
5,0.98330,65,0.99208,125,1.00856,185,1.01670,245,1.00898,305,0.99253
6,0.98332,66,0.99234,126,1.00880,186,1.01670,246,1.00874,306,0.99228
7,0.98333,67,0.99260,127,1.00904,187,1.01670,247,1.00850,307,0.99202
8,0.98335,68,0.99286,128,1.00928,188,1.01669,248,1.00825,308,0.99177
9,0.98338,69,0.99312,129,1.00952,189,1.01668,249,1.00800,309,0.99152
10,0.98341,70,0.99339,130,1.00975,190,1.01666,250,1.00775,310,0.99127
11,0.98345,71,0.99365,131,1.00998,191,1.01664,251,1.00750,311,0.99102
12,0.98349,72,0.99392,132,1.01020,192,1.01661,252,1.00724,312,0.99078
13,0.98354,73,0.99419,133,1.01043,193,1.01658,253,1.00698,313,0.99054
14,0.98359,74,0.99446,134,1.01065,194,1.01655,254,1.00672,314,0.99030
15,0.98365,75,0.99474,135,1.01087,195,1.01650,255,1.00646,315,0.99007
16,0.98371,76,0.99501,136,1.01108,196,1.01646,256,1.00620,316,0.98983
17,0.98378,77,0.99529,137,1.01129,197,1.01641,257,1.00593,317,0.98961
18,0.98385,78,0.99556,138,1.01150,198,1.01635,258,1.00566,318,0.98938
19,0.98393,79,0.99584,139,1.01170,199,1.01629,259,1.00539,319,0.98916
20,0.98401,80,0.99612,140,1.01191,200,1.01623,260,1.00512,320,0.98894
21,0.98410,81,0.99640,141,1.01210,201,1.01616,261,1.00485,321,0.98872
22,0.98419,82,0.99669,142,1.01230,202,1.01609,262,1.00457,322,0.98851
23,0.98428,83,0.99697,143,1.01249,203,1.01601,263,1.00430,323,0.98830
24,0.98439,84,0.99725,144,1.01267,204,1.01592,264,1.00402,324,0.98809
25,0.98449,85,0.99754,145,1.01286,205,1.01584,265,1.00374,325,0.98789
26,0.98460,86,0.99782,146,1.01304,206,1.01575,266,1.00346,326,0.98769
27,0.98472,87,0.99811,147,1.01321,207,1.01565,267,1.00318,327,0.98750
28,0.98484,88,0.99840,148,1.01338,208,1.01555,268,1.00290,328,0.98731
29,0.98496,89,0.99868,149,1.01355,209,1.01544,269,1.00262,329,0.98712
30,0.98509,90,0.99897,150,1.01371,210,1.01533,270,1.00234,330,0.98694
31,0.98523,91,0.99926,151,1.01387,211,1.01522,271,1.00205,331,0.98676
32,0.98536,92,0.99954,152,1.01403,212,1.01510,272,1.00177,332,0.98658
33,0.98551,93,0.99983,153,1.01418,213,1.01497,273,1.00148,333,0.98641
34,0.98565,94,1.00012,154,1.01433,214,1.01485,274,1.00119,334,0.98624
35,0.98580,95,1.00041,155,1.01447,215,1.01471,275,1.00091,335,0.98608
36,0.98596,96,1.00069,156,1.01461,216,1.01458,276,1.00062,336,0.98592
37,0.98612,97,1.00098,157,1.01475,217,1.01444,277,1.00033,337,0.98577
38,0.98628,98,1.00127,158,1.01488,218,1.01429,278,1.00005,338,0.98562
39,0.98645,99,1.00155,159,1.01500,219,1.01414,279,0.99976,339,0.98547
40,0.98662,100,1.00184,160,1.01513,220,1.01399,280,0.99947,340,0.98533
41,0.98680,101,1.00212,161,1.01524,221,1.01383,281,0.99918,341,0.98519
42,0.98698,102,1.00240,162,1.01536,222,1.01367,282,0.99890,342,0.98506
43,0.98717,103,1.00269,163,1.01547,223,1.01351,283,0.99861,343,0.98493
44,0.98735,104,1.00297,164,1.01557,224,1.01334,284,0.99832,344,0.98481
45,0.98755,105,1.00325,165,1.01567,225,1.01317,285,0.99804,345,0.98469
46,0.98774,106,1.00353,166,1.01577,226,1.01299,286,0.99775,346,0.98457
47,0.98794,107,1.00381,167,1.01586,227,1.01281,287,0.99747,347,0.98446
48,0.98814,108,1.00409,168,1.01595,228,1.01263,288,0.99718,348,0.98436
49,0.98835,109,1.00437,169,1.01603,229,1.01244,289,0.99690,349,0.98426
50,0.98856,110,1.00464,170,1.01610,230,1.01225,290,0.99662,350,0.98416
51,0.98877,111,1.00492,171,1.01618,231,1.01205,291,0.99634,351,0.98407
52,0.98899,112,1.00519,172,1.01625,232,1.01186,292,0.99605,352,0.98399
53,0.98921,113,1.00546,173,1.01631,233,1.01165,293,0.99577,353,0.98391
54,0.98944,114,1.00573,174,1.01637,234,1.01145,294,0.99550,354,0.98383
55,0.98966,115,1.00600,175,1.01642,235,1.01124,295,0.99522,355,0.98376
56,0.98989,116,1.00626,176,1.01647,236,1.01103,296,0.99494,356,0.98370
57,0.99012,117,1.00653,177,1.01652,237,1.01081,297,0.99467,357,0.98363
58,0.99036,118,1.00679,178,1.01656,238,1.01060,298,0.99440,358,0.98358
59,0.99060,119,1.00705,179,1.01659,239,1.01037,299,0.99412,359,0.98353
60,0.99084,120,1.00731,180,1.01662,240,1.01015,300,0.99385,360,0.98348
,,,,,,,,,,361,0.98344
,,,,,,,,,,362,0.98340
,,,,,,,,,,363,0.98337
,,,,,,,,,,364,0.98335
,,,,,,,,,,365,0.98333
,,,,,,,,,,366,0.98331