Verify these numbers please, I'm getting the volumes from stockwatch for Canada and Yahoo for OTC trading and I make no claims to being perfect. With that being said these are the totals I arrive at, Canadian total first, OTC second:
Mon: 4,268,324 + 1,332,300 = 5,600,624
Tue: 1,562,756 + 278,700 = 1,841,456
Wed: 1,862,091 + 324,600 = 2,186,691
Thu: 829,797 + 79,138 = 908,935