PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-15:12:50
G01     54.3           27.8                9.6 +/-    2.16      17.6 +/-    2.16  0.050 / 0.040
G06     178.4          19.3              -13.3 +/-   35.46     -29.8 +/-   35.46  0.040 / 0.050
G07     143.5          14.2               12.6 +/-    3.31      31.9 +/-    3.31  0.210 / 0.230
G11     46.0           20.2                8.6 +/-    2.40      19.0 +/-    2.40  0.210 / 0.350
G13     255.4          34.0               13.9 +/-    1.47      22.5 +/-    1.47  0.140 / 0.390
G15     288.9          16.3                9.7 +/-    1.83      23.5 +/-    1.83  0.130 / 0.390
G17     270.1          76.8               12.7 +/-    0.63      13.0 +/-    0.63  0.020 / 0.030
G19     237.8          56.5               13.8 +/-    2.41      16.2 +/-    2.41  0.030 / 0.030
G28     34.0           58.2               12.1 +/-    0.89      13.9 +/-    0.89  0.130 / 0.060
G30     146.5          45.9               13.4 +/-    0.91      17.9 +/-    0.91  0.070 / 0.090