Table: pontop_pike_station
Columns: transmitter
bbca
bbcb
d3_4
arqa
arqb
pol
a_g

Question: What is the A.G. value associated with D3&4 of 46 and transmitter of Seaham?
SQL: SELECT "a_g" FROM pontop_pike_station WHERE "d3_4" = '46' AND "transmitter" = 'seaham'

Question: What is the AG value associated with a D3&4 of 41?
SQL: SELECT "a_g" FROM pontop_pike_station WHERE "d3_4" = '41'