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               10.8 +/-    1.39      18.0 +/-    1.39  0.030 / 0.030
G07     129.3          35.6               12.3 +/-    0.64      19.4 +/-    0.64  0.030 / 0.030
G11     63.1           37.8               10.8 +/-    1.10      16.3 +/-    1.10  0.040 / 0.070
G13     289.3          37.9               13.3 +/-    1.60      20.0 +/-    1.60  0.050 / 0.080
G15     312.0          12.1                7.9 +/-    1.96      21.1 +/-    1.96  0.040 / 0.050
G17     216.5          57.5               12.1 +/-    0.84      14.0 +/-    0.84  0.040 / 0.050
G18     58.1           22.0                9.9 +/-    1.20      20.7 +/-    1.20  0.060 / 0.110
G19     215.7          31.1               10.9 +/-    2.37      18.8 +/-    2.37  0.050 / 0.100
G28     346.3          61.6                9.7 +/-    0.42      10.9 +/-    0.42  0.100 / 0.220
G30     117.7          70.9               12.1 +/-    1.02      12.8 +/-    1.02  0.160 / 0.230