History

Time	Change
2014-06-16 14:26:09+00:00	Associated with t-ranking
2014-06-16 14:26:09+00:00	Associated with rank
2014-07-04 08:48:52+00:00	Associated with weight
2014-11-15 09:02:12+00:00	Associated with source quality
2014-11-15 09:02:12+00:00	Associated with 原始品質
2014-11-23 06:50:19+00:00	Associated with q値