Open Access
Table 3
Average values of τ (see Sect. 2.4) when the Sun is partially visible and average values of the fraction of partial visibility of the Sun over when it is visible for the points of interest with an absolute latitude over 88° except point with latitude 89°.
| Shackleton crater | A1 | B1 | North Pole | |
|---|---|---|---|---|
| Average τ when the Sun is partially visible | 0.51 | 0.81 | 0.75 | 0.51 |
| Fraction of the time of partial visibility of the Sun over when it is visible (%) | 7.8 | 4.3 | 4.5 | 6.9 |
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