Table 2.

Traders' summary statistics

AgeYears tradingTestosteroneCortisolApproximate annual income, first-year traders not included, £
Average of a.m. plus p.m., pg/mlAverage of a.m. plus p.m., pg/ml
Mean27.52.61141,697164,000
Std5.61.924749135,000
Range19/389 mo/6 yrs67/184617/4,32221,770/443,340