Question

you could try and use a simple but usually mathematically effetive rule that of maths averages for your six numbers try adding your lowest and your highest number then dividing the difference to two so you'll got your six number i know it sounds silly at first but statistics say its usually a good one. 37,39,42,53,55 2,27,38,46,52, 2,14,29,53,55,31, 9,15,21,40,54