PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-22:42:50
G02     63.5           29.4                9.2 +/-    1.05      16.4 +/-    1.05  0.060 / 0.110
G05     51.5           55.6                8.2 +/-    0.89       9.8 +/-    0.89  0.060 / 0.090
G12     184.4          28.8               12.6 +/-    1.94      22.6 +/-    1.94  0.070 / 0.150
G13     122.5          18.5               11.2 +/-    1.28      25.5 +/-    1.28  0.080 / 0.100
G15     160.2          17.1               13.9 +/-    1.46      32.8 +/-    1.46  0.190 / 0.350
G21     275.9          20.2               11.7 +/-    1.17      25.6 +/-    1.17  0.120 / 0.370
G25     230.1          48.2               12.3 +/-    2.94      15.9 +/-    2.94  0.100 / 0.220
G29     334.1          61.1                9.6 +/-    0.37      10.9 +/-    0.37  0.100 / 0.230