PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-19:27:50
G07     343.4          61.5               16.3 +/-    0.66      18.2 +/-    0.66  0.040 / 0.030
G08     94.1           54.6               17.0 +/-    0.49      20.4 +/-    0.49  0.040 / 0.050
G09     186.2          66.6               16.7 +/-    0.40      18.0 +/-    0.40  0.060 / 0.090
G11     142.9          17.1               20.1 +/-    3.43      47.4 +/-    3.43  0.090 / 0.080
G23     156.4          30.7               16.9 +/-    2.04      29.1 +/-    2.04  0.030 / 0.040
G27     48.5           27.1               12.8 +/-    1.32      23.9 +/-    1.32  0.030 / 0.040
G28     243.7          35.6               20.6 +/-    2.48      32.3 +/-    2.48  0.090 / 0.060
G30     309.4          41.9               15.5 +/-    1.28      21.9 +/-    1.28  0.070 / 0.060