PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-09:28:10
G01     81.5           32.2                5.2 +/-    0.67       8.8 +/-    0.67  0.030 / 0.030
G07     130.2          38.8                6.8 +/-    0.41      10.0 +/-    0.41  0.030 / 0.030
G11     63.1           39.0                3.8 +/-    0.64       5.7 +/-    0.64  0.030 / 0.070
G13     286.5          38.6                4.5 +/-    1.41       6.6 +/-    1.41  0.030 / 0.080
G15     311.3          12.1                2.1 +/-    1.78       5.5 +/-    1.78  0.030 / 0.060
G17     218.1          57.2                6.8 +/-    0.42       8.0 +/-    0.42  0.030 / 0.040
G18     57.3           22.2                2.2 +/-    1.28       4.6 +/-    1.28  0.050 / 0.140
G19     216.4          34.4                7.7 +/-    1.39      12.3 +/-    1.39  0.060 / 0.120
G28     344.4          61.5                3.6 +/-    0.58       4.1 +/-    0.58  0.080 / 0.100
G30     119.0          73.6                6.5 +/-    0.74       6.7 +/-    0.74  0.090 / 0.110