Hi,
I've data in three columns as
Cathode Make, Age, BT
Sgl, 900, 970
Yunnan, 2100, 965
Sgl, 250, 978
Yunnan, 1678,969
Xhanxi, 299, 962
Xhanxi, 1890, 970
Sgl, 210, 971
Now I wish to count the no of readings in column 3(i.e. BT) Which are >970 with corresponding value in column 1(i.e...