PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-11:27:50
G01     44.8           20.9                3.7 +/-    2.74       8.0 +/-    2.74  0.430 / 0.540
G06     175.2          31.0                4.9 +/-    1.45       8.5 +/-    1.45  0.310 / 0.360
G11     43.8           12.0                2.1 +/-    2.16       5.6 +/-    2.16  0.030 / 0.030
G13     243.5          27.9                6.2 +/-    1.94      11.3 +/-    1.94  0.030 / 0.030
G15     279.1          14.3                3.0 +/-    0.68       7.6 +/-    0.68  0.040 / 0.030
G17     328.1          77.0                6.0 +/-    0.88       6.2 +/-    0.88  0.040 / 0.040
G19     257.8          66.1                6.8 +/-    0.70       7.3 +/-    0.70  0.100 / 0.250
G24     318.6          11.3               -8.0 +/-   24.99     -21.7 +/-   24.99  0.110 / 0.290
G28     51.2           55.3                5.1 +/-    0.51       6.0 +/-    0.51  0.060 / 0.060
G30     152.5          37.2                6.0 +/-    1.05       9.2 +/-    1.05  0.050 / 0.080