condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.1127995 0.0 0.225599 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.04505505 0.0 0.0901101 12 h after dark 0.0 0.0 0.0