PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/30-09:12:30
G02     201.0          27.1                4.8 +/-    2.06       9.0 +/-    2.06  0.190 / 0.360
G06     165.0          61.2                7.8 +/-    0.71       8.8 +/-    0.71  0.300 / 0.530
G12     303.2          12.0                2.5 +/-    9.84       6.8 +/-    9.84  0.370 / 0.430
G17     28.0           55.3                5.3 +/-    1.27       6.3 +/-    1.27  0.290 / 0.320
G19     348.2          68.9                5.1 +/-    0.30       5.4 +/-    0.30  0.060 / 0.090
G24     306.0          32.4                3.1 +/-    2.14       5.2 +/-    2.14  0.050 / 0.080
G28     89.2           42.9                6.1 +/-    0.86       8.5 +/-    0.86  0.090 / 0.130
G30     158.6          11.5                4.5 +/-    2.87      12.2 +/-    2.87  0.090 / 0.140