Table 2: Average values of standard deviation of friction coefficient and resistive coefficient for experiments. T20 and T100 represent the values of standard deviation for the reduced set of experiments. T20 and T100 represent the values of standard deviation for all experiments, without reduction in the number of experiments.

REFT20T20T100T100

Standard deviation of friction coefficient0.01690.00430.00420.01090.0111
Standard deviation of resistive coefficient0.58800.41900.35560.13210.1176