PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/26-18:43:00
G10     247.9          26.2               11.0 +/-    1.92      20.9 +/-    1.92  0.040 / 0.060
G13     55.9           30.3                8.5 +/-    1.47      14.8 +/-    1.47  0.040 / 0.060
G15     92.6           57.8                8.9 +/-    0.96      10.4 +/-    0.96  0.090 / 0.150
G16     298.3          15.9                8.0 +/-    2.04      19.6 +/-    2.04  0.070 / 0.130
G20     267.0          49.9               10.2 +/-    3.36      12.9 +/-    3.36  0.040 / 0.030
G21     329.8          57.2                8.9 +/-    0.59      10.3 +/-    0.59  0.040 / 0.040
G26     271.1          16.6                9.8 +/-    1.12      23.4 +/-    1.12  0.170 / 0.540
G29     162.7          54.5               10.4 +/-    0.35      12.4 +/-    0.35  0.170 / 0.420