Table A.1: Height of lower boundary of Earth's shadow at zenith (hz) and at 60$^\circ $ from zenith along the solar meridian in the Sun's direction.
$\varphi$ hz $h_0(\alpha=60)$
(deg) (km) (km)
3 8.8 8.0
6 35.1 29.9
9 79.5 63.3
12 142.5 106.7
15 225.1 159.1
18 328.3 220.1


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