condition mean min max 0 h after light 8.53572 8.34995 8.72149 4 h after light 7.98566 7.3971 8.57422 8 h after light 10.430995 9.81249 11.0495 4 h after dark 11.37795 11.3314 11.4245 8 h after dark 9.057515 8.73559 9.37944 12 h after dark 7.3396799999999995 6.90795 7.77141