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2021-05-15 17:02:31

Sunspot number: 24 What is the sunspot number? Updated 15 May 2021 Spotless Days Current Stretch: 0 days 2021 total: 46 days (34%) 2020 total: 208 days (57%) 2019 total: 281 days (77%) 2018 total: 221 days (61%) 2017 total: 104 days (28%) 2016 total: 32 days (9%) 2015 total: 0 days (0%) 2014 total: 1 day (<1%) 2013 total: 0 days (0%) 2012 total: 0 days (0%) 2011 total: 2 days (<1%) 2010 total: 51 days (14%) 2009 total: 260 days (71%) 2008 total: 268 days (73%) 2007 total: 152 days (42%) 2006 total: 70 days (19%) Updated 15 May 2021 Thermosphere Climate Index today: 6.18 x1010 W Cold Max: 49.4 x1010 W Hot (10/1957) Min: 2.05 x1010 W Cold (02/2009) explanation | more data: gfx, txt Updated 15 May 2021

The Radio Sun 10.7 cm flux: 71 sfu explanation | more data Updated 15 May 2021