PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/04-04:27:50
G01     274.3          42.6                3.5 +/-    0.83       4.8 +/-    0.83  0.040 / 0.060
G03     315.2          26.4                2.6 +/-    3.10       5.0 +/-    3.10  0.060 / 0.070
G10     127.2          18.4                5.0 +/-    1.77      11.4 +/-    1.77  0.090 / 0.230
G11     254.6          21.0                7.9 +/-    1.58      17.0 +/-    1.58  0.080 / 0.250
G14     37.2           53.2                4.4 +/-    0.39       5.3 +/-    0.39  0.120 / 0.230
G18     236.9          41.5                5.5 +/-    1.05       7.8 +/-    1.05  0.140 / 0.230
G22     314.6          47.6                2.9 +/-    1.39       3.8 +/-    1.39  0.070 / 0.070
G25     57.1           17.8                3.0 +/-    1.19       6.9 +/-    1.19  0.050 / 0.070
G31     64.8           75.3                5.3 +/-    0.68       5.4 +/-    0.68  0.050 / 0.070
G32     60.0           35.6                2.7 +/-    0.93       4.2 +/-    0.93  0.050 / 0.050