Where it comes from
The line in the source
Tokyo (second) | 2007-07-16 | 2014-12-07
Explore / Figure
Record
7 December 2014 Opened 16 July 2007, closed 7 December 2014
EstimateOur model or estimate. Treat it as an order of magnitude.
Found in one pass only. The research team reads every source twice, independently; this record turned up in one reading but not the other, so treat it as less certain than its grade.
The line in the source
Tokyo (second) | 2007-07-16 | 2014-12-07