The dark base of the mountainous thunderheads had a greenish tinge.
It occupies an extremely mountainous region on the frontier of Bolivia, E.
According to the statistics for 1903, based on several hundred stations, the average number of days of thunder throughout six subdivisions of the country, some wholly plain, others mainly mountainous, varied only from 21.1 to 26.5, the mean for the whole of Hungary being 23.5.
Of the two other sets of figures for Hungary (75), (iii.) relates to the central plain, (iv.) to the mountainous regions to north and south of this.
The mean annual temperatures for typical sections are as follows: Ohio Valley north of the thirty-ninth parallel, 53° F.; south-western part of state, 56°; central plateau district, 52°; mountainous belt along south-eastern boundary of state, 48° to 50°.
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