condition mean min max 0 h after light 10.9426 10.6371 11.2481 4 h after light 8.321005 6.83143 9.81058 8 h after light 6.90054 6.41192 7.38916 4 h after dark 7.661144999999999 6.89336 8.42893 8 h after dark 9.653365 9.02643 10.2803 12 h after dark 11.076450000000001 10.0213 12.1316