PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-02:57:50
G01     52.1           26.7                2.7 +/-    2.43       5.1 +/-    2.43  0.040 / 0.050
G06     180.0          20.9                6.0 +/-    1.86      13.0 +/-    1.86  0.040 / 0.060
G07     145.6          14.7                5.8 +/-    3.15      14.6 +/-    3.15  0.100 / 0.150
G11     46.0           18.9                3.5 +/-    3.05       7.8 +/-    3.05  0.130 / 0.200
G13     253.9          31.5                4.4 +/-    3.38       7.5 +/-    3.38  0.110 / 0.130
G15     285.0          16.4                5.4 +/-    1.71      12.9 +/-    1.71  0.060 / 0.130
G17     296.3          78.4                6.9 +/-    0.26       7.0 +/-    0.26  0.030 / 0.020
G19     243.8          58.7                6.1 +/-    1.23       7.0 +/-    1.23  0.020 / 0.020
G28     50.0           53.3                4.7 +/-    0.82       5.7 +/-    0.82  0.130 / 0.190
G30     147.5          39.5                6.9 +/-    0.76      10.1 +/-    0.76  0.080 / 0.160