Table 2 Summary statistics for four peaks in circular statistic radius across three impact size categories.
From: Generation of a galactic chronology with impact ages and spiral arm tangents
Impact category | Peak | Modulo divisor (period) | Galactic period | Radius | Kuiper test statistic | P value | Mean age (Ma) | |
|---|---|---|---|---|---|---|---|---|
> 70 km | 1 | 151 | 0.803 | 2.173 | < 0.01 | 52.61 | ||
> 39 km | 1 | 152 | 0.494 | 1.774 | < 0.05 | 58.74 | ||
> 20 km | 1 | 152 | 0.501 | 2.370 | < 0.01 | 53.90 | ||
Arm positions | 1 | 151 | 604 | 47.63 | ||||
1 | 152 | 608 | 47.95 | |||||
> 70 km | 2 | 165 | 0.915 | 2.415 | < 0.01 | 43.13 | ||
> 39 km | 2 | 165 | 0.646 | 2.276 | < 0.01 | 52.63 | ||
> 20 km | 2 | 165 | 0.561 | 2.529 | < 0.01 | 51.59 | ||
Arm position | 2 | 165 | 660 | 52.05 | ||||
> 70 km | 3 | 181 | 0.884 | 2.267 | < 0.01 | 34.15 | ||
> 39 km | 3 | 181 | 0.686 | 2.355 | < 0.01 | 43.26 | ||
> 20 km | 3 | 181 | 0.600 | 2.766 | < 0.01 | 48.23 | ||
Arm position | 3 | 181 | 724 | 57.10 | ||||
> 70 km | 4 | 201 | 0.708 | 1.744 | > 0.05 | 22.70 | ||
> 39 km | 4 | 199 | 0.603 | 1.939 | < 0.05 | 37.45 | ||
> 20 km | 4 | 199 | 0.616 | 2.506 | < 0.01 | 45.80 | ||
Arm positions | 4 | 199 | 796 | 62.78 | ||||
4 | 201 | 804 | 63.41 |
