Table B.1
Numbers of all shock crossings and corresponding ion and electron measurements at STEREO A (STA) and STEREO B (STB) for the years 2007 to mid 2014 (STA) or end of 2013 (STB).
| All shocks | ||||||||||
| Ions keV | Ions MeV | Electrons keV | ||||||||
| Back- | No shock- | Shock- | Back- | No shock- | Shock- | Back- | No shock- | Contami- | Shock- | |
| ground | associated | associated | ground | associated | associated | ground | associated | nation | associated | |
| increase | increase | increase | increase | increase | increase | |||||
|
|
||||||||||
| STA | ||||||||||
| 2007 | 2 | 13 | 2 | 17 | 0 | 0 | 11 | 6 | 0 | 0 |
| 2008 | 9 | 9 | 3 | 21 | 0 | 0 | 7 | 13 | 1 | 0 |
| 2009 | 1 | 14 | 1 | 16 | 0 | 0 | 12 | 3 | 1 | 0 |
| 2010 | 1 | 10 | 8 | 18 | 1 | 0 | 6 | 12 | 1 | 0 |
| 2011 | 0 | 32 | 16 | 32 | 11 | 5 | 1 | 44 | 2 | 1 |
| 2012 | 2 | 46 | 12 | 36 | 19 | 5 | 1 | 56 | 2 | 1 |
| 2013 | 1 | 38 | 18 | 44 | 10 | 3 | 1 | 51 | 4 | 1 |
| 2014 | 0 | 23 | 8 | 20 | 10 | 1 | 0 | 31 | 0 | 0 |
| sum | 16 | 185 | 68 | 204 | 51 | 14 | 39 | 216 | 11 | 3 |
| STB | ||||||||||
| 2007 | 2 | 13 | 5 | 19 | 0 | 1 | 14 | 5 | 1 | 0 |
| 2008 | 2 | 6 | 7 | 14 | 1 | 0 | 6 | 9 | 0 | 0 |
| 2009 | 5 | 11 | 4 | 20 | 0 | 0 | 19 | 1 | 0 | 0 |
| 2010 | 4 | 16 | 5 | 22 | 2 | 1 | 6 | 17 | 2 | 0 |
| 2011 | 2 | 25 | 9 | 25 | 9 | 2 | 2 | 30 | 3 | 1 |
| 2012 | 2 | 25 | 18 | 29 | 11 | 5 | 0 | 38 | 4 | 3 |
| 2013 | 1 | 31 | 13 | 33 | 11 | 1 | 4 | 39 | 1 | 1 |
| sum | 18 | 127 | 61 | 162 | 34 | 10 | 51 | 139 | 11 | 5 |
| sum A&B | 34 | 312 | 129 | 366 | 85 | 24 | 90 | 355 | 22 | 8 |
| av. M | 1.39 | 1.52 | 1.80 | 1.54 | 1.63 | 2.23 | 1.48 | 1.58 | 1.96 | 1.98 |
| av. θBn | 55.1 | 58.2 | 65.5 | 60.7 | 54.7 | 67.9 | 59.4 | 59.7 | 73.6 | 67.7 |
Notes. For each group, the columns show how many shock crossings were accompanied by quiet-time background, an enhanced pre-event background (but no shock-associated increase), and a shock-associated increase. For electrons it also lists how many shock crossings were accompanied by ion contamination, which makes the shock-spike identification unreliable. The bottom part summarizes the numbers for the two STEREO spacecraft together and presents the averaged Mach number M and the average shock-normal angle θBn of all associated shocks.
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