Table 1
The measured mass index for each year as a single aggregate distribution for 29 and 38 MHz.
| Year | s | Nechoes |
|
|
||
| 29.85 MHz | ||
|
|
||
| 2011 | −2.019 ± 0.071 | 838 648 |
| 2012 | −1.981 ± 0.074 | 1 032 151 |
| 2013 | −1.996 ± 0.074 | 942 622 |
| 2014 | −2.033 ± 0.082 | 749 059 |
| 2015 | −2.044 ± 0.075 | 758 040 |
| Overall | −2.015 ± 0.072 | 4 320 520 |
|
|
||
| 38.15 MHz | ||
|
|
||
| 2014 | −2.080 ± 0.072 | 417 381 |
| 2015 | −2.078 ± 0.076 | 370 658 |
| Overall | −2.080 ± 0.075 | 788 039 |
|
|
||
| CAMO | ||
|
|
||
| TRUE | −2.082 ± 0.056 | 3106 |
| ITR attenuation with no velocity correction | −2.044 ± 0.036 | 3106 |
| ITR | −2.069 ± 0.035 | 3106 |
Notes. Shown for comparison is the mass index found for the CAMO influx system (true), together with the apparent change to the mass index when the initial trail radius bias is applied with no velocity correction, and with a velocity correction.
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