find_right_speed('BC011113','k')
find_right_speed('DC011413','b')
find_right_speed('DH121412','r')
find_right_speed('JB011613','m')
find_right_speed('MC121812','g')

% constant coefficient (from order above)
%[8.4964 7.9405 7.3639 6.9360 7.2183]


% walk 075
%BC 4.7349
%MC 4.3607
%DC 4.2905
%JB 4.2275
%DH 4.2639