PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-08:27:40
G02     353.6          77.8                0.5 +/-    0.66       0.6 +/-    0.66  0.040 / 0.090
G05     163.9          33.9                6.7 +/-    0.94      10.8 +/-    0.94  0.050 / 0.080
G06     40.4           44.4               -0.0 +/-    0.97      -0.0 +/-    0.97  0.120 / 0.310
G12     312.1          69.4                2.5 +/-    1.77       2.7 +/-    1.77  0.070 / 0.250
G17     86.4           11.4                4.8 +/-    1.78      13.0 +/-    1.78  0.110 / 0.220
G19     75.8           26.6                3.4 +/-    0.73       6.5 +/-    0.73  0.120 / 0.190
G24     229.4          23.0                4.5 +/-    2.51       9.1 +/-    2.51  0.020 / 0.030
G25     317.4          28.6                2.1 +/-    1.31       3.8 +/-    1.31  0.030 / 0.030
G29     287.3          10.9               -3.4 +/-   21.40      -9.4 +/-   21.40  0.080 / 0.130