Table: water_resources_costa_rica
Columns: region
land_area_km_2
rainfall_by_depth_mm_year
rainfall_by_volume_km_3_year
surface_run_off_km_3_year
infiltration_km_3_year
evapotranspiration_km_3_year

Question: How many regions had rainfall infiltration (km 3/year) of 9.3?
SQL: SELECT COUNT("rainfall_by_depth_mm_year") FROM water_resources_costa_rica WHERE "infiltration_km_3_year" = '9.3'

Question: What was the rainfall by volume in Huetar Atlantico where the rainfall depth (mm/year) was 3527?
SQL: SELECT "rainfall_by_volume_km_3_year" FROM water_resources_costa_rica WHERE "rainfall_by_depth_mm_year" = 3527

Question: In Pacifico Central where the rainfall by depth (mm/year) was 2801 what was the rainfall by volume?
SQL: SELECT "rainfall_by_volume_km_3_year" FROM water_resources_costa_rica WHERE "rainfall_by_depth_mm_year" = 2801

Question: In the region where the rainfall by volume (km 3 /year) was 13.2, what was the evapotranspiration (km 3 /year)?
SQL: SELECT "evapotranspiration_km_3_year" FROM water_resources_costa_rica WHERE "rainfall_by_volume_km_3_year" = '13.2'

Question: In the Central region, what was the infiltration (km 3 /year)?
SQL: SELECT "infiltration_km_3_year" FROM water_resources_costa_rica WHERE "region" = 'Central'

Question: In the Central region, where the land area (km 2) is 8,543.2, what was the rainfall by depth (mm/year)?
SQL: SELECT "rainfall_by_depth_mm_year" FROM water_resources_costa_rica WHERE "land_area_km_2" = '8,543.2'