CHR_ID,ELEVATION,READ_DATE,DATUM_ADJ
18029400,1254.71,1996-08-15,NGVD 29
18029400,1254.62,1996-08-20,NGVD 29
18029400,1256.38,2012-06-25,NGVD 29
18029400,1253.82,2013-08-20,NGVD 29