I wish to know whether it is ok to have a comparably large positive Lyapunov exponents for a hyperchaotic system. I am working on a system which gives me LEs in the order like this : 19.4456, 1.45002, 0.0000, -28.4581, when simulated with the Wolf et al's algorithm. Is such a figure feasible for a 4D continuous-time hyperchaotic system? Thanks