PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-14:57:50
G03     189.3          18.3               12.7 +/-    4.68      29.2 +/-    4.68  0.040 / 0.090
G07     292.3          38.3               11.0 +/-    1.07      16.4 +/-    1.07  0.050 / 0.060
G08     142.2          29.1               15.0 +/-    0.89      26.8 +/-    0.89  0.060 / 0.140
G09     319.9          65.2               10.1 +/-    1.06      11.0 +/-    1.06  0.070 / 0.130
G16     42.2           34.9                9.0 +/-    0.41      14.3 +/-    0.41  0.120 / 0.340
G23     125.5          72.7               12.8 +/-    0.69      13.3 +/-    0.69  0.110 / 0.250
G27     96.4           34.7               10.9 +/-    0.81      17.3 +/-    0.81  0.090 / 0.220
G30     275.7          14.5               12.1 +/-    1.07      30.5 +/-    1.07  0.080 / 0.240