NB Any observations of the daytime sky must avoid looking directly at the Sun.
(NB Any observations of the daytime sky; must avoid; looking directly at the Sun) Context(NB Any observations of the daytime sky must avoid,List([0, 49))):(NB Any observations of the daytime sky; must avoid looking directly; at the Sun)
NB Any observations of the daytime sky must avoid,List([0, 49))
NB Any observations of the daytime sky NB Any observations of the daytime sky
must avoid must avoid looking directly
looking directly at the Sun
at the Sun