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Table 2
Main results from the three-year data set.
| Sodium | Mean | 2008 | 2009 | 2010 |
| layer | all | |||
| parameter | data | |||
|
|
||||
| Centroid | 90.8 ±0.1 |
90.5 ±0.1 |
90.7 ±0.2 |
91.1 ±0.1 |
| altitude | ||||
| [km] | ||||
|
|
||||
| Width (95% | 13.1 ±0.3 |
14.5 ±0.5 |
11.6 ±0.5 |
13.3 ±0.4 |
| ePC) | ||||
| [km] | ||||
|
|
||||
| Width (0.5′′ | 13.3 ±0.2 |
13.2 ±0.5 |
13.8 ±0.5 |
13.1 ±0.3 |
| px-95% | ||||
| ePC) [km] | ||||
|
|
||||
| Temp. PS | 34.4 |
28.5 |
19.4 |
51.5 |
| Norm. | ||||
| [m2/Hz] | ||||
|
|
||||
| Temp. PS | –1.87 ±0.02 |
–1.93 ±0.03 |
–1.97 ±0.04 |
–1.78 ±0.03 |
| Slope [–] | ||||
|
|
||||
| Non-photon | 22.4 ±1.0 |
12.9 ±1.0 |
23.8 ±1.2 |
26.5 ±1.5 |
| noise [%] | ||||
Notes. “ePC” means enclosed photon counts. Non-photon noise refers to the difference between the variance due to photon noise and the flat white noise spectrum, fitted for the temporal power spectrum.
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