Yeah... in a row.

If it's a true "ethereal projection" you should be getting them all right at once. If its just a dream then you shouldn't.

The only thing you've succeeded in proving is that you don't have them every time (if at all) and you have no way of discerning if you actually had one or it was just blind luck. 40-50 tests is far too much error if your not having 100% accuracy.

If "ethereal projection" are erratic then you'll never have comprehensive data. You may need thousands of tests to see the slight lean. But if you put 10 dice in the jar and get them all right in one night you've practically proven your findings. Or if you don't in 20 or so tests you've disproven them.