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The stream samples file contains the measured concentration and analytical uncertainty of all tracers for all stream samples. The file starts with an integer value signaling the amount of samples in the file. The next line is the header, and must contain Sample - Datetime as the first two columns (tab-separated). Further columns contain each solute and the analytical standard deviation of each solute. All further lines contain the corresponding tab-separated values for the samples. Format of the datetime column is unicode format: yyyy-mm-ddThh:mm:ss (not necessary for G-EMMA, but read by the Python module). Comment lines start with an !.

Example of a stream samples file:

No Format
10
Sample	Datetime	Br	Br_sd	Cl	Cl_sd	Na	Na_sd	Mg	Mg_sd
gh-001	2011-10-11T06:03:00	13.45	0.40	3956.21	118.69	1950.00	58.50	206.00	6.18
gh-002	2011-10-11T08:16:00	7.86	0.24	2228.75	66.86	1150.00	34.50	128.00	3.84
gh-003	2011-10-12T06:10:00	9.23	0.28	2721.36	81.64	1400.00	42.00	149.00	4.47
gh-004	2011-10-12T08:44:00	6.53	0.20	1913.43	57.40	990.00	29.70	111.00	3.33
gh-005	2011-10-12T20:47:00	4.57	0.14	1286.12	38.58	683.00	20.49	79.80	2.39
gh-006	2011-10-12T23:38:00	6.06	0.18	1688.11	50.64	907.00	27.21	104.00	3.22
gh-007	2011-10-13T11:26:00	5.49	0.16	1706.25	51.19	894.00	26.82	103.00	3.09
gh-008	2011-10-13T14:05:00	4.39	0.13	1317.99	39.54	742.00	22.26	89.30	2.68
gh-009	2011-10-14T06:49:00	4.59	0.14	1358.86	40.77	750.00	22.50	89.70	2.69
gh-010	2011-10-14T09:29:00	4.96	0.15	1490.88	44.73	773.00	23.19	93.50	2.81