PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/06-02:43:00
G01     40.9           16.2                2.1 +/-    1.66       5.0 +/-    1.66  0.100 / 0.300
G06     177.9          35.6                5.8 +/-    1.66       9.2 +/-    1.66  0.090 / 0.350
G13     236.9          22.3                5.3 +/-    2.83      10.9 +/-    2.83  0.060 / 0.160
G15     270.9          12.1                3.1 +/-    3.24       8.4 +/-    3.24  0.080 / 0.130
G17     7.9            68.9                4.2 +/-    0.76       4.4 +/-    0.76  0.090 / 0.210
G19     274.8          68.3                3.0 +/-    0.63       3.2 +/-    0.63  0.090 / 0.150
G24     315.4          21.9                0.2 +/-    1.98       0.5 +/-    1.98  0.040 / 0.070
G28     68.5           49.1                3.1 +/-    0.46       3.9 +/-    0.46  0.040 / 0.060
G30     154.8          28.0                5.5 +/-    0.98      10.0 +/-    0.98  0.130 / 0.260