PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-19:43:10
G07     14.9           68.1               17.3 +/-    0.37      18.5 +/-    0.37  0.030 / 0.050
G08     67.6           51.5               17.0 +/-    0.82      21.1 +/-    0.82  0.030 / 0.040
G09     180.7          50.2               19.6 +/-    1.04      24.7 +/-    1.04  0.190 / 0.300
G11     132.0          27.0               19.3 +/-    2.43      36.0 +/-    2.43  0.160 / 0.280
G18     115.0          10.2                4.6 +/-   41.36      12.8 +/-   41.36  0.040 / 0.040
G23     158.8          15.9               20.4 +/-    1.76      49.6 +/-    1.76  0.030 / 0.030
G27     40.2           16.5               10.9 +/-    2.10      26.0 +/-    2.10  0.160 / 0.410
G28     259.6          46.0               18.6 +/-    1.95      24.8 +/-    1.95  0.210 / 0.390
G30     322.6          52.5               15.9 +/-    0.85      19.4 +/-    0.85  0.040 / 0.050