condition mean min max 4 h after light 0.446342 0.147819 0.744865 8 h after light 0.544219 0.484949 0.603489 12 h after light 0.245176 0.195532 0.29482 4 h after dark 0.52003 0.38653 0.65353 8 h after dark 0.4491265 0.258268 0.639985 12 h after dark 0.7962175 0.321115 1.27132