condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.046534 0.0 0.139602 4 h after dark 0.091577 0.0 0.274731 8 h after dark 0.06792224666666667 0.0 0.203763 12 h after dark 0.3268256666666667 0.241411 0.430343