PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-00:57:30
G10     247.2          25.3               12.1 +/-    1.39      23.5 +/-    1.39  0.080 / 0.180
G13     56.7           30.9                9.1 +/-    1.77      15.7 +/-    1.77  0.140 / 0.190
G15     92.8           57.5               11.2 +/-    0.85      13.0 +/-    0.85  0.030 / 0.050
G16     300.9          15.1                6.0 +/-    1.77      14.9 +/-    1.77  0.030 / 0.050
G20     264.9          48.0               10.8 +/-    3.10      14.0 +/-    3.10  0.070 / 0.160
G21     329.4          57.1                8.9 +/-    0.47      10.4 +/-    0.47  0.090 / 0.130
G26     272.8          16.8                9.9 +/-    2.52      23.6 +/-    2.52  0.220 / 0.360
G29     161.3          53.1               11.4 +/-    0.41      13.8 +/-    0.41  0.170 / 0.330