condition mean min max 4 h after light 0.7728615 0.512573 1.03315 8 h after light 0.4717805 0.4204 0.523161 12 h after light 0.4459425 0.383367 0.508518 4 h after dark 0.22419450000000002 0.113308 0.335081 8 h after dark 0.306865 0.22192 0.39181 12 h after dark 0.342187 0.22042 0.463954