left_col,right_col,sample_type
DATE_FOUND_ID,ID,P
DATE_FOUND_ID,YEAR,P
DATE_FOUND_ID,MONTH,P
DATE_FOUND_ID,DAY,P
DATE_FOUND_ID,HOUR,P
DATE_FOUND_ID,MINUTE,P
DATE_FOUND_ID,MONTH_NAME,P
DATE_FOUND_ID,WEEK_NUMBER,P
DATE_FOUND_ID,DAY_OF_WEEK,P
DATE_FOUND_ID,SEASON,P
GRID_ID,ID,N
GRID_ID,DAY,N