ID	DATE	HCO3	FE2
Gs_199	2000-12-04	203.8	0.04
Gs_199	2002-11-18	247.73	0.015
Gs_199	2003-02-19	150.71	0.1
Gs_199	2003-05-21	208.07	0.015
Gs_199	2003-08-18	230.64	0.11
Gs_199	2004-03-23	212.34	0.09
Gs_199	2004-06-21	186.1	0.03
Gs_199	2004-09-23	217.22	0.03
Gs_199	2005-01-17	207.46	0.15
Gs_199	2005-04-18	230.64	0.09
Gs_199	2005-11-14	228.81	0.11
Gs_199	2006-11-07	265.42	0.05
Gs_199	2007-02-13	259.93	0.24
Gs_199	2007-05-21	236.75	0.06
Gs_199	2007-09-11	237.97	0.015
Gs_199	2007-12-10	237.97	0.015
Gs_199	2008-03-11	228.81	0.015
Gs_199	2008-06-18	218.44	0.015