What is the storm name of the storm that affected the greatest number of regions?
select t1.name, t1.max_speed from storm as t1 join affected_region as t2 on t1.storm_id = t2.storm_id group by t1.storm_id order by count ( * ) desc limit 1
What is the name of the storm with the lowest speed?
select t1.name from storm as t1 join affected_region as t2 on t1.storm_id = t2.storm_id order by max_speed limit 1
What is the average speed of all the storms?
select avg ( max_speed ) from storm
What's the average damage in millions usd for all storms?
select avg ( damage_millions_usd ) from storm as t1 join affected_region as t2 on t1.storm_id = t2.storm_id