condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.12689266666666668 0.0 0.209539 6 h after dark 0.0 0.0 0.0 9 h after dark 0.26697333333333334 0.181102 0.345126 12 h after dark 0.22661433333333333 0.0 0.503004