always 1.0 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1 always 0.1