PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-04:58:00
G10     267.6          39.5               12.6 +/-    1.57      18.5 +/-    1.57  0.060 / 0.070
G13     41.5           17.3                5.9 +/-    1.23      14.0 +/-    1.23  0.080 / 0.110
G15     57.9           47.4                8.4 +/-    0.76      10.9 +/-    0.76  0.040 / 0.050
G16     281.9          11.9               13.4 +/-    2.69      35.8 +/-    2.69  0.040 / 0.040
G20     298.6          60.5                8.4 +/-    0.79       9.4 +/-    0.79  0.110 / 0.180
G21     7.2            72.2                8.4 +/-    0.67       8.7 +/-    0.67  0.130 / 0.170
G24     119.8          14.4                9.5 +/-    1.33      23.9 +/-    1.33  0.120 / 0.270
G27     319.2          17.9                9.0 +/-    1.14      20.8 +/-    1.14  0.150 / 0.280
G29     165.7          28.0               10.1 +/-    1.21      18.5 +/-    1.21  0.030 / 0.050