PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-16:58:10
G03     193.0          30.1               13.4 +/-    1.56      23.4 +/-    1.56  0.130 / 0.330
G07     279.0          30.4               13.1 +/-    1.24      22.7 +/-    1.24  0.110 / 0.240
G08     152.9          16.8               14.7 +/-    3.32      35.0 +/-    3.32  0.020 / 0.030
G09     319.7          50.6               10.6 +/-    0.69      13.3 +/-    0.69  0.020 / 0.030
G16     47.8           48.6                9.8 +/-    0.68      12.6 +/-    0.68  0.090 / 0.120
G22     177.8          13.3               13.7 +/-    2.82      35.3 +/-    2.82  0.090 / 0.110
G23     60.2           81.6               10.0 +/-    0.88      10.1 +/-    0.88  0.050 / 0.060
G26     42.9           19.7                9.0 +/-    1.86      20.0 +/-    1.86  0.050 / 0.060
G27     111.5          28.0               11.0 +/-    1.54      20.2 +/-    1.54  0.140 / 0.210