pH	group
7.06	positive
7.18	positive
7.30	positive
7.30	positive
7.31	positive
7.32	positive
7.33	positive
7.34	positive
7.36	positive
7.36	positive
7.40	positive
7.41	positive
7.43	positive
7.48	positive
7.49	positive
7.53	positive
7.55	positive
7.57	positive
7.55	no-resp
7.70	no-resp
7.73	no-resp
7.75	no-resp
7.75	no-resp
7.77	no-resp