PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-19:12:50
G01     102.4          27.9               18.4 +/-    1.36      33.8 +/-    1.36  0.080 / 0.150
G07     113.3          55.2               16.8 +/-    0.32      20.0 +/-    0.32  0.070 / 0.130
G08     42.0           19.0               11.3 +/-    1.28      25.4 +/-    1.28  0.030 / 0.030
G09     174.2          9.9                21.3 +/-    2.09      59.4 +/-    2.09  0.030 / 0.030
G11     84.1           43.1               17.0 +/-    0.50      23.6 +/-    0.50  0.090 / 0.160
G13     305.9          31.1               12.6 +/-    0.91      21.6 +/-    0.91  0.080 / 0.150
G17     208.9          39.0               17.2 +/-    1.78      25.4 +/-    1.78  0.040 / 0.070
G18     75.8           24.8               15.6 +/-    0.44      30.7 +/-    0.44  0.050 / 0.090
G28     327.8          61.6               13.9 +/-    0.63      15.6 +/-    0.63  0.040 / 0.050
G30     54.4           79.3               15.6 +/-    0.81      15.8 +/-    0.81  0.040 / 0.060