PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-13:27:50
G03     202.6          47.3                9.5 +/-    1.99      12.5 +/-    1.99  0.110 / 0.240
G07     265.2          21.2                8.2 +/-    1.98      17.5 +/-    1.98  0.100 / 0.220
G09     315.1          36.9                8.2 +/-    0.95      12.5 +/-    0.95  0.060 / 0.130
G16     67.2           60.3                7.9 +/-    0.51       8.9 +/-    0.51  0.100 / 0.130
G22     182.6          28.7                8.6 +/-    1.55      15.5 +/-    1.55  0.050 / 0.080
G23     350.1          72.1                8.1 +/-    0.62       8.5 +/-    0.62  0.060 / 0.080
G26     46.3           33.0                7.4 +/-    0.71      12.3 +/-    0.71  0.030 / 0.040
G27     126.1          17.7                9.1 +/-    1.52      21.2 +/-    1.52  0.030 / 0.030