Table schema:
CREATE TABLE weekly_weather (low_temperature INTEGER, precipitation INTEGER, station_id VARCHAR); CREATE TABLE station (id VARCHAR, network_name VARCHAR)

Question: Give me the maximum low temperature and average precipitation at the Amersham station.
SQL: SELECT MAX(t1.low_temperature), AVG(t1.precipitation) FROM weekly_weather AS t1 JOIN station AS t2 ON t1.station_id = t2.id WHERE t2.network_name = "Amersham"