SSD – smartctl – Status

Airflow_Temperatore_Cel is the temperature in Celsius. Total_LBAs_Written is the number of sectors written. The POR_Recovery_Count and Wear_Leveling_Count seem to be samsung specific values, so you'd have to ask them for the details, but the VALUE/THRES for the wear leveling appears to indicate you have used up about 4% of the drive's life. The Power-Off_Retract_Count seems to be completely bogus as there is no way it could possibly be that large.