Give me the maximum low temperature and average precipitation at the Amersham station.
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"
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"
[{'max(t1.low_temperature)': 55, 'avg(t1.precipitation)': 42.857142857142854}]