text: /*
  Site: HackerRank
  Type: Practice
  Subdomain: Aggregation
  Difficulty: Easy
  Skill: SQL (Oracle)
  Problem: Weather Observation Station 13
  URL: https://www.hackerrank.com/challenges/weather-observation-station-13/problem
  */
  
  
  -- SOLUTION:
  
  SELECT SUM(lat_n) 
  FROM station
  WHERE lat_n BETWEEN 38.7880 AND 137.2345;