condition mean min max 4 h after light 10.6843955 10.215041 11.15375 8 h after light 9.653233 9.282892 10.023574 12 h after light 12.4788435 9.654764 15.302923 4 h after dark 8.9512325 8.387326 9.515139 8 h after dark 13.0807215 12.964628 13.196815 12 h after dark 9.845938 9.845938 9.845938