condition mean min max 4 h after light 4.271165 3.56489 4.97744 8 h after light 6.02891 5.56165 6.49617 12 h after light 5.346715 5.28611 5.40732 4 h after dark 8.07142 4.80765 11.7739 8 h after dark 8.824553333333334 8.6027 9.15598 12 h after dark 7.264356666666666 4.65776 11.7617