CHR_ID,ELEVATION,READ_DATE,DATUM_ADJ
18001800,1254.74,1978-09-06,NGVD 29
18001800,1254.89,1996-06-26,NGVD 29
18001800,1256.10,2011-06-01,NGVD 29
18001800,1255.42,2012-03-19,NGVD 29
18001800,1255.61,2013-05-17,NGVD 29