PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-04:58:10
G01     236.5          26.3                8.6 +/-    1.89      16.2 +/-    1.89  0.090 / 0.150
G03     309.6          55.0                5.2 +/-    2.25       6.2 +/-    2.25  0.190 / 0.160
G14     75.6           30.8                4.1 +/-    1.66       7.1 +/-    1.66  0.030 / 0.020
G16     158.5          30.5                7.0 +/-    1.65      12.1 +/-    1.65  0.030 / 0.030
G22     268.3          75.3                5.5 +/-    0.69       5.6 +/-    0.69  0.100 / 0.110
G23     296.6          26.9                5.3 +/-    2.01      10.0 +/-    2.01  0.090 / 0.190
G26     124.6          48.2                6.3 +/-    0.68       8.1 +/-    0.68  0.040 / 0.050
G31     40.4           46.3                3.5 +/-    0.81       4.7 +/-    0.81  0.030 / 0.040
G32     88.2           16.3                5.1 +/-    0.83      12.3 +/-    0.83  0.090 / 0.140