PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-16:12:30
G02     201.0          20.9                9.7 +/-    3.17      20.8 +/-    3.17  0.100 / 0.120
G06     169.1          55.8                9.8 +/-    0.77      11.6 +/-    0.77  0.100 / 0.120
G13     224.8          12.2                7.4 +/-   10.54      19.6 +/-   10.54  0.050 / 0.080
G17     19.5           60.8                9.9 +/-    0.68      11.2 +/-    0.68  0.040 / 0.070
G19     332.4          70.9                9.6 +/-    0.63      10.1 +/-    0.63  0.040 / 0.040
G24     308.9          30.3                8.6 +/-    1.11      15.0 +/-    1.11  0.040 / 0.030
G28     85.4           43.7               10.2 +/-    1.28      14.1 +/-    1.28  0.040 / 0.030
G30     156.9          12.0                9.2 +/-    2.73      24.7 +/-    2.73  0.040 / 0.030