Low EstimateTime, in working days, for an easy asset. Fractional days are OK.High EstimateTime, in working days, for a tough or particularly complex assetRisk % represents how the likelihood the asset will likely be reworked once it is "done", for either artistic or technical reasons; a risk factor of 100 would mean the asset will probably need to be redone from scratch one time.Polish % Means, roughly, how much more than the typical time would it take to really bring the asset to perfection. Eg, if I can make a passable house in 3 days, but a really good one will take me 6, that would mean a polish % of 100 (ie, double time).