condition mean min max 0 h after light 2.789085 2.54253 3.03564 4 h after light 1.264292 0.811304 1.71728 8 h after light 2.423445 2.31402 2.53287 4 h after dark 2.497655 2.44376 2.55155 8 h after dark 2.19074 2.0585 2.32298 12 h after dark 2.40921 2.33353 2.48489