PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/04-12:27:50
G03     210.4          56.1                6.7 +/-    0.62       7.9 +/-    0.62  0.060 / 0.180
G07     258.2          16.0                4.0 +/-    2.21       9.6 +/-    2.21  0.170 / 0.230
G09     311.4          30.0                5.8 +/-    1.10      10.2 +/-    1.10  0.070 / 0.070
G16     86.7           63.5                6.2 +/-    0.81       6.9 +/-    0.81  0.090 / 0.090
G22     185.4          37.8                6.0 +/-    0.66       9.0 +/-    0.66  0.030 / 0.040
G23     336.4          64.2                5.3 +/-    0.98       5.8 +/-    0.98  0.030 / 0.040
G26     51.1           40.1                5.6 +/-    0.92       8.1 +/-    0.92  0.040 / 0.040
G27     132.8          11.8                6.3 +/-    1.74      17.0 +/-    1.74  0.040 / 0.030