The mean time to onset of a 12% increase in FEV1 for PROVENTIL HFA Inhalation Aerosol was 7 minutes and the mean time to peak effect was approximately 50 minutes. The mean duration of effect as measured by a 12% increase in FEV1 was 2.3 hours. In some pediatric patients, duration of effect was as long as 6 hours.
The Aztecs, who probably originated as a nomadic tribe in northern Mexico, arrived in Mesoamerica around the beginning of the 13th century.
What the would be Mexica do is a version of pan Indianism, an inaccurate view of all Indians as one generic group. Where the old westerns (and some non-Natives today) see all Indians as one vague Plains Indian culture, the Mexica see all Mexicans as generic Aztecs.