Pedro sends in this chart that shows the same info as the previous ones, but more synthetically. If, in the referendum, the turnout/votes to revoke combination is above the blue line, the opposition wins. If it's below the blue line, the government wins. If it's above the purpole line, the opposition gets a bit of a safety margin (250,000 votes)
Note: On the flat part of the graph (right side), the vote totals are higher than the basis.