PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-04:57:30
G03     253.1          69.3                5.0 +/-    0.25       5.3 +/-    0.25  0.040 / 0.080
G09     303.0          20.1                3.2 +/-    1.78       6.9 +/-    1.78  0.070 / 0.070
G14     96.6           17.4                3.1 +/-    1.51       7.2 +/-    1.51  0.030 / 0.060
G16     129.2          56.6                5.3 +/-    0.36       6.2 +/-    0.36  0.040 / 0.040
G22     199.5          59.5                4.9 +/-    1.40       5.5 +/-    1.40  0.140 / 0.380
G23     316.0          45.7                3.0 +/-    1.35       4.0 +/-    1.35  0.130 / 0.470
G26     73.5           52.4                3.9 +/-    0.87       4.8 +/-    0.87  0.030 / 0.060
G31     50.8           21.6               -0.5 +/-    2.03      -1.0 +/-    2.03  0.030 / 0.060