PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/09-18:28:00
G02     227.1          68.5                7.8 +/-    0.82       8.3 +/-    0.82  0.260 / 0.470
G05     174.3          10.2               -7.2 +/-   16.67     -20.1 +/-   16.67  0.300 / 0.410
G06     43.8           65.5                7.1 +/-    0.89       7.7 +/-    0.89  0.040 / 0.050
G12     320.1          43.2                8.0 +/-    0.40      11.0 +/-    0.40  0.040 / 0.040
G17     63.4           28.5                8.3 +/-    1.31      15.0 +/-    1.31  0.080 / 0.130
G19     50.4           41.9                8.0 +/-    1.11      11.3 +/-    1.11  0.120 / 0.110
G24     253.6          38.2               22.6 +/-    1.79      34.0 +/-    1.79  0.060 / 0.100
G28     127.1          11.7                9.1 +/-    2.47      24.4 +/-    2.47  0.050 / 0.090