pH	group
7.060000000e+000	positive
7.180000000e+000	positive
7.300000000e+000	positive
7.300000000e+000	positive
7.310000000e+000	positive
7.320000000e+000	positive
7.330000000e+000	positive
7.340000000e+000	positive
7.360000000e+000	positive
7.360000000e+000	positive
7.400000000e+000	positive
7.410000000e+000	positive
7.430000000e+000	positive
7.480000000e+000	positive
7.490000000e+000	positive
7.530000000e+000	positive
7.550000000e+000	positive
7.570000000e+000	positive
7.550000000e+000	no-resp
7.700000000e+000	no-resp
7.730000000e+000	no-resp
7.750000000e+000	no-resp
7.750000000e+000	no-resp
7.770000000e+000	no-resp