PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/04-11:27:50
G01     57.5           29.1                3.5 +/-    1.06       6.2 +/-    1.06  0.100 / 0.240
G07     142.2          19.1                4.0 +/-    2.57       9.0 +/-    2.57  0.100 / 0.250
G11     47.8           24.2                3.7 +/-    1.42       7.3 +/-    1.42  0.020 / 0.020
G13     259.6          35.7                6.4 +/-    1.89      10.1 +/-    1.89  0.030 / 0.030
G15     293.7          15.8                1.6 +/-    1.57       4.0 +/-    1.57  0.150 / 0.440
G17     255.5          74.8                5.2 +/-    0.55       5.3 +/-    0.55  0.130 / 0.340
G18     40.9           11.7                2.8 +/-    2.37       7.6 +/-    2.37  0.040 / 0.040
G19     233.3          53.8                6.1 +/-    2.31       7.3 +/-    2.31  0.040 / 0.040
G28     25.6           59.5                3.8 +/-    0.76       4.4 +/-    0.76  0.110 / 0.070
G30     145.0          52.2                5.9 +/-    0.56       7.3 +/-    0.56  0.090 / 0.060