According to Blasius solution the local skin friction coefficient in the boundary layer over a flat plate is given by
1
\(\frac{{1.328}}{{R{e^{1/2}}}}\)
2
\(\frac{{0.664}}{{R{e^{4/5}}}}\)
3
\(\frac{{0.664}}{{R{e^{1/2}}}}\)
4
\(\frac{{0.332}}{{R{e^{1/2}}}}\)