An apnea is indicated if there is an 80%/75% (Respironics/ResMed) reduction in airflow for 10 seconds compared to the average airflow over an extended period of several minutes or if there is no airflow detected for 10 seconds. Apnea/Clear Airway Apnea Detection the the Respironics System One.. An apnea is detected when there is an 80% reduction in airflow from a baseline for at least 10 seconds if there is no airflow detected for 10 seconds. During the apnea, one or more pressure test pulses are delivered by the device.
Coyotes are very dangerous. They usually do not allow you to get that close to them. The problem is if the coyote has rabies or is sick in any other way they will be very aggresive and come after you. I am not sure what you should do if confronted again.
The coyote has erect, pointed ears, a long snout and green wolf like eyes. Its body, including its 12 to 16 inch tail, is three to four feet long. The thick coat and prominent bushy tail have black tipped guard hairs. The inner fur varies. The inner fur varies greatly from reddish blond of arid zone coyotes to the light gray of coyotes in northern forests. Coyotes range from Panama to the Alaska northern slope.