fig3a.dat

pH	umolm2	dataset
3.161954	0.3004253	1
4.055604	0.5005591	1
5.083331	0.73826	1
6.222217	0.8626136	1
7.338482	0.9115239	1
8.611046	0.9728164	1
9.392342	0.9844122	1
9.972548	0.9459465	1
10.46337	0.882436	1

3.242562	0.4906141	2
4.840974	0.8938723	2
6.79489	1.310116	2
7.749898	1.449244	2
9.216113	1.563935	2
9.593938	1.55187	2
9.860751	1.514587	2
10.30544	1.452448	2
10.70598	1.31502	2

3.611669	1.130048	3
4.237762	1.40599	3
5.175905	1.568332	3
6.739942	1.956302	3
7.856306	2.03037	3
9.419098	2.103875	3
9.865175	2.015264	3
10.26681	1.977023	3
10.66805	1.838153	3

4.059191	1.406215	4
4.506465	1.619489	4
5.579084	1.920026	4
6.58444	2.145177	4
9.354575	2.720309	4
9.599312	2.518743	4
10.04554	2.467867	4
10.51294	2.127657	4
10.75783	1.963827	4

3.635385	1.48222	5
3.90359	1.569933	5
4.664059	1.958913	5
6.429287	2.422101	5
8.909943	3.173698	5
9.667971	2.94633	5
10.04718	2.882959	5
10.60312	2.353958	5
10.89211	2.051708	5
11.02553	1.925754	5