condition mean min max 4 h after light 258.02686 199.491109 316.562611 8 h after light 303.599238 269.124453 338.074023 12 h after light 283.2914445 261.840794 304.742095 4 h after dark 239.9205495 195.367915 284.473184 8 h after dark 223.888652 215.314478 232.462826 12 h after dark 191.180706 191.180706 191.180706