id,article_id,difficulty
1,2094426,5.1
136,2095568,5.1
234,2096418,4.6
264,2096620,5.0
278,2096717,4.8
406,2097531,4.9
407,2097532,5.1
446,2097817,5.1
494,2098075,5.1
625,2098887,5.2
626,2098888,5.2
652,2099188,5.1
678,2099423,5.0
708,2099560,5.1
715,2099582,5.1
741,2099655,5.3
753,2099987,5.1
762,2099996,5.1
863,2100814,5.1
921,2101260,4.5
935,2101292,5.2
960,2101636,4.9
985,2101718,5.1
1014,2102030,5.2
1048,2102463,4.9
1053,2102468,4.3
1055,2102470,5.0
1059,2102474,5.1
1094,2102862,4.9
1162,2103279,5.1
1178,2103662,5.0
1199,2103712,5.1
1273,2104317,4.9
1297,2104408,5.1
1301,2104413,4.9
1314,2104450,5.2
1340,2104729,5.1
1345,2104737,5.2
1376,2104957,5.0
1382,2104963,5.1
1388,2104971,5.2
1425,2105223,5.2
1456,2105519,5.0
1487,2105575,5.1
1502,2105813,4.9
1534,2106008,4.9
1554,2106117,5.1
1584,2106214,5.1
1600,2106534,5.2
1606,2106540,5.1
1628,2106589,5.1
1656,2106925,5.0
1692,2107187,5.0
1705,2107231,5.3
1718,2107330,4.9
1719,2107331,4.9
1724,2107343,5.1
1730,2107350,5.1
1731,2107351,5.4
1732,2107352,5.2
1744,2107383,5.1
1750,2107422,5.1
1751,2107423,5.2
1760,2107750,5.1
1763,2107753,5.0
1776,2107774,5.1
1800,2107896,5.1
1809,2108227,5.0
1820,2108240,4.7
1824,2108244,5.2
1839,2108284,5.2
1865,2108470,5.1
1875,2108639,5.2
1876,2108640,5.2
1877,2108641,5.1
1879,2108644,5.1
1883,2108668,5.3
1898,2108734,5.0
1899,2108735,5.2
1909,2108746,5.2
1915,2109088,5.1
1916,2109089,5.2
1917,2109090,5.3
1920,2109094,5.0
1931,2109111,5.2
1932,2109113,4.8
1972,2109519,4.9
1973,2109520,5.2
1975,2109522,5.1
1981,2109528,5.0
1986,2109533,5.2
2063,2109972,5.1
2084,2110312,5.0
2085,2110313,4.8
2099,2110329,5.1
2144,2110790,5.2
2153,2110811,5.0
2200,2111171,5.2
2252,2111578,5.2
2264,2111597,5.1
2337,2112045,5.3
2410,2112607,4.3
2416,2112645,4.9
2434,2112848,5.2
2472,2113044,5.2
2484,2113068,4.9
2516,2113389,5.0
2518,2113391,5.1
2522,2113402,5.2
2525,2113405,4.9
2550,2113486,5.0
2617,2117835,5.1
2659,2118258,5.0
2665,2118275,5.1
2698,2118386,5.3
2776,2119102,5.1
2851,2119589,5.1
2866,2119906,5.1
2879,2119923,5.2
2908,2120174,5.2
2914,2120250,4.8
2920,2120257,5.1
2921,2120258,5.2
2924,2120282,5.1
2948,2120551,4.9
2955,2120559,5.2
2958,2120562,5.2
3007,2120851,5.1
3010,2120854,5.2
3014,2120862,4.9
3016,2120864,5.1
3024,2120884,5.1
3082,2121360,5.1
3084,2121363,5.0
3091,2121376,5.2
3117,2121630,5.1
3124,2121637,5.0
3179,2121947,4.7
3180,2121948,3.1
3371,2144474,5.1
3471,2145255,5.1
3564,2145945,4.9
3590,2146252,5.2
3630,2146584,4.9
3727,2147269,4.9
3794,2147708,5.1
3808,2147959,5.2
3818,2147978,5.1
4032,2149548,4.9
4089,2175410,4.5
4323,2177391,5.0
4325,2177394,5.0
4327,2177397,5.1
4328,2177399,5.0
4329,2177416,2.3
4333,2177420,5.0
4362,2177800,5.1
4365,2177803,5.0
4370,2177818,5.0
4372,2177820,4.9
4373,2177837,3.0
4381,2177845,4.7
4400,2177930,5.3
4405,2178218,5.0
4410,2178223,5.1
4416,2178229,4.8
4448,2178453,5.1
4480,2178821,5.0
4485,2178826,4.7
4496,2178846,5.2
4498,2178848,5.2
4531,2179091,5.1
4559,2179261,5.0
4929,2207761,5.0
5032,2208411,5.1
5093,2208854,5.2
5105,2209073,4.9
5109,2209079,5.1
5174,2238079,5.1
5228,2238413,5.2
5241,2238595,5.0
5273,2238837,5.1
5284,2239050,4.8
5297,2239071,5.0
5369,2239675,5.1
5405,2240055,4.6