- Query Option will ask the user for the country name or code and print the airports & runways at each airport. The input can be country code or country name. For bonus points make the test partial/fuzzy. e.g. entering zimb will result in Zimbabwe :)
- 10 countries with highest number of airports (with count) and countries with lowest number of airports.
- Type of runways (as indicated in "surface" column) per country
- Print the top 10 most common runway identifications (indicated in "le_ident" column)
- Top airports by average flight delay;