Open Access
Table A.1
Zenith angle correction to the background rate for different optical phases.
| Optical phase | Start date | p1 | p2 |
|---|---|---|---|
| 1/1b | 01/2004 | 218.8 ± 1.0 | 0.92 ± 0.02 |
| 1c | 07/2007 | 171.7 ± 0.7 | 1.10 ± 0.06 |
| 1c1 | 04/2010 | 174.3 ± 1.9 | 1.02 ± 0.07 |
| 1c2 | 10/2010 | 176.5 ± 3.2 | 0.71 ± 0.05 |
| 1c3 | 04/2011 | 188.2 ± 1.9 | 0.61 ± 0.07 |
| 1d | 11/2011 | 214.9 ± 2.7 | 0.81 ± 0.16 |
| 2b0 | 01/2013 | 258.7 ± 9.7 | 0.73 ± 0.21 |
| 2b2 | 06/2013 | 250.9 ± 12.0 | 0.61 ± 0.04 |
| 2b3 | 05/2014 | 165.7 ± 1.4 | 0.91 ± 0.03 |
| 2b4 | 11/2014 | 205.2 ± 1.6 | 0.87 ± 0.07 |
| 2b5 | 08/2015 | 142.2 ± 1.8 | 0.84 ± 0.19 |
| 2c0 | 01/2017 | 380.6 ± 17.7 | 1.31 ± 0.06 |
| 2c1 | 03/2017 | 495.8 ± 4.9 | 1.05 ± 0.04 |
| 2c2 | 05/2017 | 435.0 ± 2.3 | 0.99 ± 0.02 |
| 2d3 | 10/2019 | 385.8 ± 1.5 | 1.08 ± 0.01 |
Notes. The fit parameters are estimated from a fit of Eq. (4) to the trigger rates of the H.E.S.S. telescopes for the different optical phases.
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