PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-02:58:00
G01     53.7           27.7                0.9 +/-    1.26       1.6 +/-    1.26  0.130 / 0.280
G06     180.4          19.1                4.9 +/-    0.92      10.9 +/-    0.92  0.110 / 0.350
G07     145.0          16.4                4.7 +/-    1.00      11.3 +/-    1.00  0.030 / 0.060
G11     46.6           20.4                0.7 +/-    1.08       1.6 +/-    1.08  0.030 / 0.060
G13     256.0          32.4                4.6 +/-    1.03       7.7 +/-    1.03  0.030 / 0.030
G15     286.8          16.6                2.9 +/-    1.62       7.0 +/-    1.62  0.040 / 0.030
G17     286.6          78.2                3.4 +/-    0.89       3.5 +/-    0.89  0.060 / 0.100
G19     241.1          57.1                4.4 +/-    0.84       5.2 +/-    0.84  0.060 / 0.110
G28     47.2           54.0                1.8 +/-    0.94       2.1 +/-    0.94  0.070 / 0.160
G30     146.6          41.5                5.0 +/-    1.06       7.1 +/-    1.06  0.070 / 0.170