PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/18-01:58:10
G01     122.6          15.3                7.1 +/-    3.37      17.6 +/-    3.37  0.040 / 0.060
G07     69.2           68.2                3.7 +/-    0.99       3.9 +/-    0.99  0.030 / 0.060
G08     47.3           35.9                1.6 +/-    0.60       2.6 +/-    0.60  0.040 / 0.070
G09     178.2          31.1                5.0 +/-    1.17       8.5 +/-    1.17  0.040 / 0.080
G11     114.0          37.6                5.7 +/-    0.44       8.6 +/-    0.44  0.080 / 0.180
G13     319.9          15.2                0.7 +/-    2.73       1.7 +/-    2.73  0.090 / 0.140
G17     201.0          20.2                5.5 +/-    1.75      12.1 +/-    1.75  0.030 / 0.040
G28     286.5          56.1                4.8 +/-    1.06       5.6 +/-    1.06  0.030 / 0.030
G30     346.7          67.4                1.5 +/-    0.48       1.6 +/-    0.48  0.140 / 0.280