pair,train_n,train_mean
P1+P2,241,-8.01
P1+P3,103,-6.51
P1+P4,57,-12.43
P1+P5,72,-12.1
P1+P6,80,-11.89
P1+P7,60,-5.78
P1+P8,43,-19.95
P2+P3,96,-1.69
P2+P4,57,-8.4
P2+P5,66,-8.27
P2+P6,79,-7.71
P2+P7,72,-6.39
P2+P8,42,-20.09
P3+P4,34,0.66
P3+P5,30,-10.47
P3+P6,31,-6.17
P3+P7,11,0.24
P3+P8,6,-11.93
P4+P5,10,1.17
P4+P6,13,0.94
P4+P7,13,-0.68
P4+P8,2,-52.48
P5+P6,137,-5.15
P5+P7,83,-4.95
P5+P8,27,-17.07
P6+P7,95,-2.73
P6+P8,29,-22.33
P7+P8,26,-5.46