In his research for simple quadratic chaotic systems, Julian Clinton Sprott collected more than 20 systems . Most of them produce Rössler-like chaotic attractors . We choose — quite arbitrarily — to include the Sprott H system that is rewritten in the form
where a=0.5 and b=1. This system produces a chaotic attractor that is topologically equivalent to the Rössler attractor (Fig. 1).
The data here provided corresponds to a numerical simulation of the Sprott H system with a time step s. There are three columns that are associated with the time evolution of x, y and z, respectively.
The observability coefficients for the Sprott H system are , , , that is, variables can be ranked as
 J. C. Sprott, Some simple chaotic flows, Physical Review E, 50 (2), 647-650, 1994.
 J.-M. Ginoux & C. Letellier, Flow curvature manifolds for shaping chaotic attractors : I Rössler-like systems, Journal of Physics A, 42, 285101, 2009.