PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-23:57:30
G10     291.8          49.4               11.9 +/-    1.36      15.2 +/-    1.36  0.060 / 0.080
G14     209.2          10.5               -3.3 +/-   31.45      -9.2 +/-   31.45  0.050 / 0.090
G15     46.9           32.2               11.0 +/-    0.49      18.3 +/-    0.49  0.060 / 0.050
G18     349.0          66.6               11.5 +/-    0.77      12.5 +/-    0.77  0.060 / 0.050
G20     69.4           19.4               11.2 +/-    1.34      25.0 +/-    1.34  0.030 / 0.040
G21     86.5           75.2               13.6 +/-    0.42      14.0 +/-    0.42  0.040 / 0.060
G24     102.5          25.1               13.6 +/-    0.90      26.5 +/-    0.90  0.040 / 0.060
G27     302.2          33.7               12.9 +/-    0.83      20.9 +/-    0.83  0.030 / 0.050
G32     210.0          26.9               16.5 +/-    1.90      30.8 +/-    1.90  0.200 / 0.650