Weather Patterns. In Chapter, we discussed the types of information that are collected by...

Weather Patterns. In Chapter, we discussed the types of information that are collected by the National Weather Bureau. Figure contained a sample of the reports that are available with weather information. A group of data files included in the instructors CD that accompanies this text contains weather information for Stapleton International Airport for the period January–December 1991. Each file contains data from 1 month; each line in the file contains 32 pieces of information, in the order shown in The data have been edited so that they are totally numeric. If a field of information contained T, for a trace amount, the corresponding value in the data file contains 0.001. There are nine possible weather types, and because several weather types can occur during a single day, nine fields are used to store this information. For example, if weather type 1 occurred, the first of the nine fields will contain a 1; otherwise, it will contain a 0. If weather type 2 occurred, the second of the nine fields will contain a 1; otherwise, it will contain a 0. The peak wind-gust direction has been converted to an integer using the following:

N 1

NE 2

E 3

SE 4

S 5

SW 6

W 7

NW 8

The values on each line in the data file are separated by blanks, and the data files are named jan91.dat, feb91.dat, and so on.

Write a program that computes the average temperature for days with fog in November 1991.

Figure Straight-line distance between two points.