PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-13:57:30
G02     205.1          34.2                7.8 +/-    1.93      12.5 +/-    1.93  0.060 / 0.090
G06     151.4          72.1                8.0 +/-    0.63       8.3 +/-    0.63  0.060 / 0.080
G12     308.3          17.3                5.1 +/-    3.15      12.0 +/-    3.15  0.130 / 0.190
G17     35.3           49.8                5.5 +/-    0.90       6.9 +/-    0.90  0.100 / 0.140
G19     10.0           62.8                5.5 +/-    0.66       6.1 +/-    0.66  0.050 / 0.140
G24     295.6          38.4                6.4 +/-    2.15       9.5 +/-    2.15  0.050 / 0.110
G28     101.5          35.3                6.9 +/-    0.57      10.8 +/-    0.57  0.040 / 0.040