PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/21-02:57:50
G01     90.3           31.8                7.2 +/-    0.48      12.1 +/-    0.48  0.040 / 0.060
G07     125.4          45.6                6.9 +/-    1.36       9.3 +/-    1.36  0.040 / 0.050
G11     70.8           40.7                6.1 +/-    0.40       8.7 +/-    0.40  0.120 / 0.250
G13     295.7          35.3                5.4 +/-    0.99       8.5 +/-    0.99  0.130 / 0.400
G15     314.9          10.5               -5.9 +/-   14.43     -16.4 +/-   14.43  0.040 / 0.040
G17     214.7          53.2                8.1 +/-    0.79       9.8 +/-    0.79  0.050 / 0.040
G19     214.6          27.7                5.1 +/-    2.74       9.4 +/-    2.74  0.030 / 0.050
G28     350.5          61.7                4.0 +/-    0.39       4.5 +/-    0.39  0.030 / 0.050
G30     108.6          72.7                6.8 +/-    1.05       7.1 +/-    1.05  0.100 / 0.120