Where it comes from
Our calculation from other figures in the trainer’s notes.
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Related figures
The same measure, other periods
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Record
0 sets Year to February 2001 (Mar 2000-Feb 2001)
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.
Our calculation from other figures in the trainer’s notes.
The same measure, other periods