$ zgrep ,3918, 20160215/wbs_propertypairs.csv.gz
241,,1415,3918,0.13444974434645346,item
1415,,241,3918,0.06688061179201803,item
31,3918,17,7410,0.6091245376078915,item
31,3918,18,1194,0.09815043156596794,item
31,3918,1566,824,0.06773530620632963,item
31,3918,571,4203,0.34549938347718867,item
31,3918,856,4095,0.3366214549938348,item
31,3918,625,5426,0.44603370324702013,item
31,3918,131,1860,0.15289765721331688,item
31,3918,138,280,0.02301685162351007,item
31,3918,140,304,0.024989724619810933,item
31,3918,154,134,0.011015207562679818,item
31,3918,159,582,0.04784217016029593,item
31,3918,166,155,0.012741471434443074,item
31,3918,691,133,0.010933004521167283,item
31,3918,30,187,0.015371968762844225,item
31,3918,213,297,0.024414303329223182,item
31,3918,214,2117,0.17402383888203862,item
31,3918,227,649,0.05334977394163584,item
31,3918,1771,1127,0.09264282778462803,item
31,3918,244,456,0.0374845869297164,item
31,3918,268,827,0.06798191533086724,item
31,3918,269,958,0.07875051376900945,item
31,3918,281,1130,0.09288943690916564,item
31,3918,646,2879,0.23666255651459103,item
31,3918,361,129,0.010604192355117139,item
31,3918,373,2701,0.22203041512535965,item
31,3918,2427,3354,0.27570900123304565,item
31,3918,910,2786,0.2290176736539252,item
31,3918,935,163,0.013399095766543362,item
31,3918,463,304,0.024989724619810933,item
279,3918,571,1,0.038461538461538464,item
279,3918,227,2,0.07692307692307693,item
279,3918,452,2,0.07692307692307693,item
279,3918,646,11,0.4230769230769231,item
279,3918,361,2,0.07692307692307693,item
279,3918,138,1,0.038461538461538464,item
279,3918,1963,1,0.038461538461538464,item
279,3918,2354,1,0.038461538461538464,item
279,3918,910,11,0.4230769230769231,item
279,3918,527,1,0.038461538461538464,item
279,3918,112,1,0.038461538461538464,item
279,3918,17,8,0.3076923076923077,item
279,3918,18,1,0.038461538461538464,item
279,3918,373,5,0.19230769230769232,item
279,3918,856,1,0.038461538461538464,item
279,3918,1151,1,0.038461538461538464,item
279,3918,349,3,0.11538461538461539,item
279,3918,31,2,0.07692307692307693,item

$ zgrep ,3918, 20160314/wbs_propertypairs.csv.gz
31,3918,17,7426,0.6104899704044722,item
31,3918,18,1214,0.09980269648142058,item
31,3918,1566,820,0.06741203551463334,item
31,3918,571,5181,0.42592897073331143,item
31,3918,856,4115,0.33829332456428807,item
31,3918,625,5431,0.4464814205853338,item
31,3918,131,1880,0.15455442288720816,item
31,3918,138,292,0.024005261427162118,item
31,3918,140,304,0.024991779020059193,item
31,3918,154,140,0.011509371917132522,item
31,3918,159,595,0.04891483064781322,item
31,3918,166,155,0.012742518908253864,item
31,3918,691,134,0.011016113120683986,item
31,3918,30,187,0.015373232489312726,item
31,3918,213,302,0.024827359421243013,item
31,3918,214,2124,0.174613613942782,item
31,3918,227,659,0.05417625780993095,item
31,3918,1771,1121,0.09215718513646827,item
31,3918,244,462,0.03798092732653732,item
31,3918,268,825,0.06782308451167379,item
31,3918,269,954,0.07842814863531733,item
31,3918,281,1125,0.09248602433410062,item
31,3918,646,2876,0.23643538309766524,item
31,3918,361,131,0.010769483722459717,item
31,3918,373,2780,0.22854324235448867,item
31,3918,2427,3350,0.27540282801709964,item
31,3918,910,2801,0.23026964814205853,item
31,3918,935,161,0.013235777704702401,item
31,3918,463,303,0.0249095692206511,item
1005,,18,3918,0.5060054242541651,item
279,3918,571,1,0.038461538461538464,item
279,3918,227,2,0.07692307692307693,item
279,3918,452,1,0.038461538461538464,item
279,3918,646,11,0.4230769230769231,item
279,3918,361,2,0.07692307692307693,item
279,3918,138,1,0.038461538461538464,item
279,3918,1963,1,0.038461538461538464,item
279,3918,140,1,0.038461538461538464,item
279,3918,2354,1,0.038461538461538464,item
279,3918,910,12,0.46153846153846156,item
279,3918,527,1,0.038461538461538464,item
279,3918,112,1,0.038461538461538464,item
279,3918,17,8,0.3076923076923077,item
279,3918,18,1,0.038461538461538464,item
279,3918,373,5,0.19230769230769232,item
279,3918,856,1,0.038461538461538464,item
279,3918,1151,1,0.038461538461538464,item
279,3918,349,3,0.11538461538461539,item
279,3918,31,2,0.07692307692307693,item
1615,,31,3918,0.9994897959183674,item


$ zgrep ,3918, 20160411/wbs_propertypairs.csv.gz
31,3918,17,7461,0.6135690789473685,item
31,3918,18,1235,0.1015625,item
31,3918,1566,825,0.0678453947368421,item
31,3918,571,5184,0.4263157894736842,item
31,3918,2643,891,0.07327302631578947,item
31,3918,625,5730,0.4712171052631579,item
31,3918,131,1887,0.15518092105263157,item
31,3918,138,294,0.024177631578947367,item
31,3918,140,303,0.024917763157894738,item
31,3918,154,141,0.011595394736842105,item
31,3918,159,609,0.05008223684210526,item
31,3918,166,155,0.01274671052631579,item
31,3918,691,133,0.0109375,item
31,3918,30,187,0.01537828947368421,item
31,3918,213,302,0.024835526315789475,item
31,3918,214,2126,0.17483552631578947,item
31,3918,227,671,0.05518092105263158,item
31,3918,1771,1117,0.09185855263157895,item
31,3918,244,478,0.03930921052631579,item
31,3918,268,822,0.06759868421052631,item
31,3918,269,951,0.07820723684210526,item
31,3918,281,1122,0.09226973684210527,item
31,3918,646,2871,0.23610197368421051,item
31,3918,856,4123,0.3390625,item
31,3918,361,132,0.010855263157894738,item
31,3918,373,2782,0.2287828947368421,item
31,3918,2427,3344,0.275,item
31,3918,910,2805,0.23067434210526316,item
31,3918,935,160,0.013157894736842105,item
31,3918,463,303,0.024917763157894738,item
279,3918,571,1,0.038461538461538464,item
279,3918,227,2,0.07692307692307693,item
279,3918,452,1,0.038461538461538464,item
279,3918,646,11,0.4230769230769231,item
279,3918,361,2,0.07692307692307693,item
279,3918,138,1,0.038461538461538464,item
279,3918,1963,1,0.038461538461538464,item
279,3918,140,1,0.038461538461538464,item
279,3918,2354,1,0.038461538461538464,item
279,3918,910,12,0.46153846153846156,item
279,3918,527,1,0.038461538461538464,item
279,3918,112,1,0.038461538461538464,item
279,3918,17,8,0.3076923076923077,item
279,3918,18,1,0.038461538461538464,item
279,3918,373,5,0.19230769230769232,item
279,3918,856,1,0.038461538461538464,item
279,3918,1151,1,0.038461538461538464,item
279,3918,349,3,0.11538461538461539,item
279,3918,31,2,0.07692307692307693,item
2180,,570,3918,0.8806473364801078,item