condition mean min max 0 h after light 0.600463 0.399833 0.801093 4 h after light 0.8148 0.0 1.6296 8 h after light 1.011797 0.395574 1.62802 4 h after dark 0.5905825 0.392687 0.788478 8 h after dark 1.58344 1.18136 1.98552 12 h after dark 0.3949475 0.390599 0.399296