condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0428591 0.0 0.0857182 12 h after light 0.0 0.0 0.0 4 h after dark 0.034161 0.0 0.068322 8 h after dark 0.0 0.0 0.0 12 h after dark 0.06208695 0.0567593 0.0674146