In human history to date, only a few species of large animal have been domesticated. In approximate order of their earliest domestication these are: dog, sheep, goat, pig, ox, yak, reindeer, water buffalo, horse, donkey, llama, alpaca, Bactrian camel and Arabian camel.
For instance at sea level and standard weather (29.9 Hg) a gauge vacuum of -25.9 Hg is equivalent to an absolute pressure of 4 Hg. In other words, the vacuum gauges that read, for example, -25.9 Hg at full vacuum is actually reporting 4 Hg, or 136 mbar. That is still in the low vacuum range.
To find the gauge pressure at the deepest point of the Great Lakes the pressure formula P = [rho]gh can be used. To find the absolute pressure the pressure at the surface is added. The pressure at the surface is equal to 100,000 Pa. The density of water is equal to 1,000 kg/m3.