condition mean min max 4 h after light 137.947479 134.181743 141.713215 8 h after light 171.256789 170.367773 172.145805 12 h after light 143.1983975 124.872318 161.524477 4 h after dark 208.2028745 140.462826 275.942923 8 h after dark 186.120277 130.056149 242.184405 12 h after dark 108.116923 108.116923 108.116923