Also, "use a different grid" is only masking the problem, not actually fixing it. The real problem is ever using an average without also specifying some sort o

Also, "use a different grid" is only masking the problem, not actually fixing it. The real problem is ever using an average without also specifying some sort of bounds. For median-based data, this probably means the upper and lower quartiles (or possibly other percentiles); for mean-based data, this probably means standard deviation.