That stopped when the priests realized that most of the people couldn't actually use a quipu in that manner: the converts had to return to the quipu specialists to obtain a quipu and a list of sins that corresponded to the knots. After that, the Spanish worked to suppress the use of the quipu.
Average sonographer salary. An average hourly rate (wage) and the annual salary for sonographers in the United States is around $31.90 per hour and $66,360 per year.
Most full-time sonographers work about 37 hours a week; they may have evening and weekend hours and times when they are on call and must be ready to report to work on short notice. Diagnostic medical sonographers earn a median salary of $64,380 per year, according to the U.S. Department of Labor in 2010.ost full-time sonographers work about 37 hours a week; they may have evening and weekend hours and times when they are on call and must be ready to report to work on short notice. Diagnostic medical sonographers earn a median salary of $64,380 per year, according to the U.S. Department of Labor in 2010.