Initially we have $B_{\rm rms}=2.66$.
b16c urms=0.19, brms=2.27, umax=0.64, bmax=6.0
b10 at t=1: urms=0.14, brms=0.31, umax=0.43, bmax=0.89, kurtosis close to 3.
b10b urms=0.45, brms=0.99, umax=1.6, bmax=2.8, kurtosis close to 3 (2.8 for B, 3.2 for u).




