PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/12-20:27:50
G03     189.6          20.0               12.4 +/-    1.11      27.3 +/-    1.11  0.070 / 0.090
G07     293.1          41.0               10.4 +/-    2.49      14.8 +/-    2.49  0.060 / 0.080
G08     139.0          28.9               14.6 +/-    1.86      26.2 +/-    1.86  0.290 / 0.250
G09     320.6          63.2               10.4 +/-    0.62      11.5 +/-    0.62  0.160 / 0.470
G16     43.7           42.2                8.8 +/-    0.96      12.3 +/-    0.96  0.110 / 0.130
G23     111.2          81.1                8.5 +/-    0.60       8.6 +/-    0.60  0.140 / 0.140
G26     43.9           16.3                8.9 +/-    2.76      21.5 +/-    2.76  0.020 / 0.020
G27     102.5          33.8               12.0 +/-    0.76      19.5 +/-    0.76  0.020 / 0.030
G30     273.8          12.5                6.9 +/-   17.87      18.2 +/-   17.87  0.030 / 0.030