5050 m above sea level, 730 kg of experimental equipment carried by 19 porters, 7000 L of cylinder gases, 53 sleep studies, 107 ventilatory response tests, 107 arterial blood samples, 720 transcranial magnetic stimulation zaps, 200 cardiac echos, 18 hours of hyperventilation, 20 L of infused saline, 8 life-saving intramuscular Dexamethasone injections and 1,042,800,000 sampling data points.