# Weather Observation Station 19 Solution

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Also Visit:  Weather Observation Station 18 Solution

#### Problem

Consider P1(a, c) and P2(b, d) to be two points on a 2D plane where (a, b) are the respective minimum and maximum values of Northern Latitude (LAT_N) and (c, d) are the respective minimum and maximum values of Western Longitude (LONG_W) in STATION.

Query the Euclidean Distance between points P1 and P2 and format your answer to display 4 decimal digits.

Input Format

The STATION table is described as follows:

where LAT_N is the northern latitude and LONG_W is the western longitude.

## Solution – Weather Observation Station 19

##### MySQL Code
```SELECT ROUND(SQRT(POWER(MAX(LAT_N)-MIN(LAT_N),2)
+POWER(MAX(LONG_W)-MIN(LONG_W),2)),4) FROM STATION;```

#### Weather observations

Basic weather observation instruments include thermometers, rain gauges, barometers, and anemometers (wind speed meters).

#### What are the four types of weather observations?

There are four types of weather observations: surface, upper air, radar, and satellite.

#### What is weather observation stations?

A weather station is a facility, either on land or sea, with instruments and equipment for measuring atmospheric conditions to provide information for weather forecasts and to study the weather and climate.

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