Encara no tenim significats per a "meridian observation".
1A meridian observation of the sun placed us in latitude 41° 04' 06.
2By a meridian observation, the latitude of the place was 42° 50' 08.
3We arrived just in time for meridian observation, and carried the barometer to the summit of the butte, which is 500 feet above the lake.
4While this work was going on, Marvin, favored by clear weather, took another meridian observation for latitude and obtained 86° 38'.
5From the river, the plain had gradually risen to an altitude of 5,500 feet, and, by meridian observation, the latitude of the entrance was 42°.
6When I was there, the volumes containing the earlier meridian observations were in press.
7Nauen reports an error of five minutes in their meridian observations according to the official clocks.
8Also weather interferes with many meridian observations.
9The number of meridian observations on the sun, Mercury, Venus, and Mars alone numbered 62,030.
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