condition mean min max 4 h after light 0.0371752 0.0 0.0743504 8 h after light 0.0203229 0.0 0.0406458 12 h after light 0.01184155 0.0 0.0236831 4 h after dark 0.0205018 0.0 0.0334299 8 h after dark 0.0099016 0.0 0.0297048 12 h after dark 0.0182149 0.0 0.0408003