Commotio cordis. Commotio cordis (Latin, agitation of the heart) is an often lethal disruption of heart rhythm that occurs as a result of a blow to the area directly over the heart (the precordial region), at a critical time during the cycle of a heart beat causing cardiac arrest.
A ZIP Code is a five digit number that identifies a specific geographic mail delivery area. The acronym ZIP refers to Zone Improvement Plan, a plan implemented by the USPS in the early 1960âs to improve the sorting and delivery of mail. There are approximately 43,000 ZIP Codes in the United States.
I couldn't find my own data in the set, and actually it seems like lots of entire area codes are missing. Assuming `cat schat.csv | uniq | cut -c1-4 | wc -l` is the proper command, there are only 76 of 322 [2] US area codes represented. It appears there are two Canadian area codes represented in the database: 867 and 204.