condition mean min max 4 h after light 109.6155015 62.494366 156.736637 8 h after light 192.973094 157.059342 228.886846 12 h after light 179.3420275 144.611282 214.072773 4 h after dark 140.77601099999998 123.726542 157.82548 8 h after dark 98.00468599999999 91.001349 105.008023 12 h after dark 79.130472 79.130472 79.130472