PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/11-11:27:50
G01     109.0          23.4                4.1 +/-    2.06       8.3 +/-    2.06  0.040 / 0.070
G07     103.7          57.8                4.3 +/-    0.51       4.9 +/-    0.51  0.030 / 0.060
G08     43.0           27.0                2.3 +/-    1.45       4.3 +/-    1.45  0.080 / 0.190
G09     175.5          17.2                5.8 +/-    1.83      13.7 +/-    1.83  0.090 / 0.210
G11     94.1           43.7                5.6 +/-    0.60       7.7 +/-    0.60  0.040 / 0.050
G13     311.5          27.7                3.4 +/-    1.39       6.2 +/-    1.39  0.030 / 0.060
G17     204.9          30.1                4.6 +/-    1.45       8.1 +/-    1.45  0.040 / 0.070
G18     83.0           23.6                2.5 +/-    0.93       5.0 +/-    0.93  0.040 / 0.070
G28     299.5          57.0                2.5 +/-    0.71       3.0 +/-    0.71  0.070 / 0.170
G30     9.7            76.3                5.6 +/-    0.72       5.7 +/-    0.72  0.070 / 0.160