condition mean min max 0 h after light 8.003405 7.52832 8.47849 2 h after light 6.99805 6.03336 7.96274 4 h after light 7.457649999999999 7.26596 7.64934 8 h after light 4.895 4.76631 5.02369 12 h after light 8.101115 7.21213 8.9901 2 h after dark 9.35103 8.68596 10.0161 4 h after dark 7.8839950000000005 7.68097 8.08702 8 h after dark 9.00768 8.46763 9.54773 12 h after dark 7.673205 6.42887 8.91754