condition mean min max 4 h after light 2.737245 2.56536 2.90913 8 h after light 1.98501 1.48461 2.48541 12 h after light 2.0647450000000003 2.04433 2.08516 4 h after dark 1.874175 1.6881 2.06025 8 h after dark 2.015745 1.90606 2.12543 12 h after dark 2.0368 2.03288 2.04072