CHR_ID,ELEVATION,READ_DATE,DATUM_ADJ
21005100,1377.55,1985-07-09,NGVD 29
21005100,1377.10,1997-07-29,NGVD 29
21005100,1376.99,2000-08-30,NGVD 29
21005100,1377.30,2001-06-29,NGVD 29