condition mean min max 0 h after light 0.981912 0.710224 1.2536 4 h after light 1.3504575 0.977625 1.72329 8 h after light 0.8708465 0.809152 0.932541 4 h after dark 1.178715 1.05567 1.30176 8 h after dark 1.497022 0.769304 2.22474 12 h after dark 0.568376 0.254098 0.882654