PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-18:57:50
G01     85.1           32.3               11.7 +/-    0.78      19.5 +/-    0.78  0.040 / 0.050
G07     129.3          35.6               12.2 +/-    0.89      19.2 +/-    0.89  0.030 / 0.070
G11     63.1           37.8                9.9 +/-    0.75      14.9 +/-    0.75  0.070 / 0.110
G13     289.3          37.9               10.2 +/-    0.89      15.3 +/-    0.89  0.060 / 0.090
G15     312.0          12.1                7.4 +/-    1.76      19.6 +/-    1.76  0.040 / 0.070
G17     216.5          57.5               13.0 +/-    0.71      15.1 +/-    0.71  0.030 / 0.080
G18     58.1           22.0                8.3 +/-    1.78      17.5 +/-    1.78  0.120 / 0.130
G19     215.7          31.1               12.7 +/-    1.23      21.8 +/-    1.23  0.120 / 0.110
G28     346.3          61.6                9.3 +/-    0.67      10.5 +/-    0.67  0.100 / 0.150
G30     117.7          70.9               11.8 +/-    0.48      12.4 +/-    0.48  0.100 / 0.130