PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-10:12:40
G01     126.8          10.5              -16.8 +/-   25.34     -46.4 +/-   25.34  0.220 / 0.330
G07     56.0           68.5                4.2 +/-    0.40       4.5 +/-    0.40  0.140 / 0.360
G08     54.6           44.8                3.1 +/-    0.97       4.2 +/-    0.97  0.060 / 0.090
G09     178.1          38.0                6.7 +/-    1.01      10.1 +/-    1.01  0.060 / 0.090
G11     120.7          35.4                5.2 +/-    1.15       8.3 +/-    1.15  0.060 / 0.110
G13     321.0          11.6               -0.6 +/-   12.90      -1.6 +/-   12.90  0.060 / 0.110
G17     200.4          10.1               -9.1 +/-    9.01     -25.4 +/-    9.01  0.030 / 0.030
G18     104.2          15.9                4.0 +/-    0.69       9.8 +/-    0.69  0.030 / 0.040
G28     267.3          46.7                6.8 +/-    0.72       9.0 +/-    0.72  0.130 / 0.500
G30     330.5          59.3                4.1 +/-    1.15       4.7 +/-    1.15  0.130 / 0.400