Largest supported football club in Scotland?

Glasgow Celtic having the largest stadium capacity have a weekly crowd of 60,000 . Next is Glasgow Rangers at 50,000. Glasgow Rangers have the largest fanbase in Scotland and the fourth largest in UK at 1.5M (Man Utd = 4.3M, Liverpool = 3.2M, Arsenal = 2.3M, Rangers 1.5M, Chelsea 1.45M, Celtic = 1.4m).