1 Latitude & Longitude for Vancouver, British Columbia, Canada in decimal degrees: 49.2, -123.2. 2  Altitude/ elevation: 4 m (14 ft).  Campbell River, Bc, Canada - 172.4 kms (107.1 miles) WNW.
The average exchange of air per breath is 500 ml for men and 390 mL for women and the average breathing rate is about 12 times per minute.That's about 6 litres a minute, 0.360 m3/hr for men and 4 litres a minute, 0.240 m3/hr for women.he average exchange of air per breath is 500 ml for men and 390 mL for women and the average breathing rate is about 12 times per minute.
1 Calculate the litres of air used, during the dive by multiplying the air consumed in BAR by the size of the cylinder: 2  120 BAR consumed x 10 = 1200 litres used during the dive. 3  Get the average litres per minute by dividing the litres used by the time in minutes: 4  1200 / 20 = 60 litres a minute.e has a SAC rate of 25 litres per minute. 1  Work out how much air is available-Remove and ignore 50 BAR from the cylinder calculations. 2  At 25m (3.5 BAR) his breathing rate will be 3.5 (BAR) x 25 (SAC) = 87.5 litres per minute. 3  How many 87.5 (litres per minute) will go into 2040 (his available air) = 23 Minutes.