Table 2.
Target densities and exposure times of six low-resolution and three high-resolution surveys used in this example.
| Survey | ρ50 | ρ10 | ρ90 | mean(Texp) | med(Texp) |
|---|---|---|---|---|---|
| (deg−2) | (deg−2) | (deg−2) | (min) | (min) | |
| LR 1 | 22 | 14 | 50 | 90 | 90 |
| LR 2 | 3 | 1 | 4 | 16 | 31 |
| LR 3 | 73 | 31 | 144 | 16 | 22 |
| LR 4 | 75 | 60 | 95 | 19 | 44 |
| LR 5 | 51 | 47 | 56 | 38 | 53 |
| LR 6 | 375 | 305 | 473 | 25 | 25 |
| LR tot | 618 | 529 | 737 | 25 | 33 |
| HR 1 | 119 | 88 | 158 | 30 | 36 |
| HR 2 | 89 | 63 | 125 | 63 | 64 |
| HR 3 | 99 | 72 | 151 | 87 | 76 |
| HR tot | 306 | 224 | 431 | 55 | 58 |
Notes. Target densities are estimated within a circle with a 1° radius. We give the median density (ρ50) as well the 10 and 90% quantiles of the distribution. For some surveys the target density is uniform across the selected area whilst for others the target density varies significantly. For exposure times we give both the mean and median values.
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