PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/30-07:28:00
G01     62.2           30.5                2.5 +/-    0.58       4.3 +/-    0.58  0.030 / 0.040
G06     179.8          12.0                2.9 +/-   13.46       7.8 +/-   13.46  0.030 / 0.040
G07     140.1          25.2                6.6 +/-    0.73      12.8 +/-    0.73  0.050 / 0.110
G11     50.9           29.5                2.8 +/-    0.72       5.0 +/-    0.72  0.050 / 0.150
G13     265.5          37.5                6.5 +/-    2.21       9.8 +/-    2.21  0.070 / 0.140
G15     295.8          16.6                2.5 +/-    2.10       5.9 +/-    2.10  0.070 / 0.150
G17     243.8          73.7                6.6 +/-    0.69       6.8 +/-    0.69  0.060 / 0.110
G19     228.1          49.7                7.7 +/-    1.05       9.8 +/-    1.05  0.060 / 0.130
G28     14.1           60.7                4.0 +/-    0.56       4.5 +/-    0.56  0.040 / 0.060
G30     141.8          59.4                7.1 +/-    0.78       8.1 +/-    0.78  0.040 / 0.050