A Bridge Game With No Scores in the 40's

I just noticed that last night's bridge game was odd. It was a 5 table 3/4 Howell with 8 rounds of 3. Take a look at the results. The usual suspects were at the top and the usual ones at the bottom, but not one score was in the 40's. It looks like a reasonably normal distribution of scores at the top but 7th place our of 10 was 51.04% and then it jumps way down to 38.02% for 8th place. I don't think I've seen that before, except maybe in a section with only 6 pairs, but 10 pairs is pretty substantial.