PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-04:27:40
G01     314.9          26.6                6.9 +/-    1.60      13.0 +/-    1.60  0.210 / 0.240
G10     93.3           46.2                6.7 +/-    1.32       8.9 +/-    1.32  0.200 / 0.230
G11     294.4          25.9                8.8 +/-    3.55      16.8 +/-    3.55  0.040 / 0.050
G14     324.1          71.0                5.0 +/-    0.92       5.2 +/-    0.92  0.040 / 0.040
G18     293.7          46.9                5.6 +/-    8.48       7.4 +/-    8.48  0.170 / 0.200
G20     112.8          22.7                7.0 +/-    0.96      14.5 +/-    0.96  0.110 / 0.130
G22     305.5          17.0                7.9 +/-    3.33      18.8 +/-    3.33  0.040 / 0.050
G25     94.1           12.1                5.5 +/-    1.23      14.6 +/-    1.23  0.040 / 0.040
G31     171.3          53.2                7.3 +/-    0.91       8.9 +/-    0.91  0.080 / 0.080
G32     20.0           62.0                4.8 +/-    0.66       5.4 +/-    0.66  0.070 / 0.090