Record leads over previous lows.
For each month this table shows the date and size of the maximum lead over the previous low using the VISHOP Extent data:
Date of new low New low Date of prev. low Previous low Lead
2005/01/22 13,209,681 2004/01/22 13,720,961 -511,280
2005/02/19 13,814,486 2004/02/19 14,570,793 -756,307
2005/03/27 13,828,610 2004/03/27 14,394,437 -565,827
2004/04/20 13,024,968 1995/04/20 13,586,119 -561,151
2016/05/16 11,197,909 2015/05/16 11,806,520 -608,611
2010/06/29 8,941,910 2006/06/29 9,405,346 -463,436
2007/07/28 6,410,368 2006/07/28 7,254,560 -844,192
2007/08/29 4,471,798 2005/08/29 5,606,865 -1,135,067
2007/09/10 4,144,892 2005/09/10 5,443,272 -1,298,380
2007/10/15 5,454,601 2005/10/15 6,915,101 -1,460,500
2016/11/19 8,302,669 2012/11/19 9,405,060 -1,102,391
2006/12/01 9,999,765 2005/12/01 10,782,722 -782,957
Notice that neither 2012 or 2020 appears in this list. If we look at daily record leads for all 365 days, the year 2007 has the most records with 106 days, followed by 2005 with 68 days and 2016 with 62 days. 2012 has the record for only 8 days and 2020 has the record for a mere 3 days (the last three days).Here is the full list:
Year Daily records
2007 106
2005 68
2016 62
2006 53
2004 31
2010 22
2012 8
2015 5
2019 4
2017 3
2020 3
It will be interesting to see if 2020 will beat the July record held by 2007 on 28/07. The daily data can be downloaded here:
https://tinyurl.com/yyk74uwz