PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-18:42:40
G01     91.1           31.1               14.1 +/-    0.39      24.1 +/-    0.39  0.060 / 0.060
G07     125.3          40.1               13.5 +/-    0.44      19.6 +/-    0.44  0.060 / 0.050
G11     68.7           40.2               12.3 +/-    0.58      17.9 +/-    0.58  0.040 / 0.080
G13     295.4          36.5               13.2 +/-    1.00      20.4 +/-    1.00  0.040 / 0.090
G17     212.6          52.4               14.9 +/-    1.12      18.2 +/-    1.12  0.040 / 0.070
G18     63.2           23.3               11.7 +/-    0.56      23.9 +/-    0.56  0.030 / 0.080
G19     213.3          26.4               14.2 +/-    3.58      26.9 +/-    3.58  0.140 / 0.130
G28     336.1          61.5               12.3 +/-    0.67      13.8 +/-    0.67  0.150 / 0.130
G30     104.5          74.9               13.1 +/-    0.81      13.6 +/-    0.81  0.070 / 0.230