PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-02:28:00
G01     120.9          16.6                7.3 +/-    2.24      17.4 +/-    2.24  0.060 / 0.050
G07     74.9           67.4                5.0 +/-    0.93       5.4 +/-    0.93  0.070 / 0.050
G08     46.2           34.0                3.1 +/-    1.32       5.0 +/-    1.32  0.390 / 0.180
G09     177.9          29.0                7.0 +/-    0.96      12.5 +/-    0.96  0.230 / 0.170
G11     111.4          38.6                5.9 +/-    0.93       8.8 +/-    0.93  0.030 / 0.030
G13     319.1          16.7                3.2 +/-    4.04       7.6 +/-    4.04  0.030 / 0.030
G17     201.3          22.4                5.0 +/-    2.06      10.4 +/-    2.06  0.060 / 0.070
G28     290.1          56.9                4.3 +/-    1.66       5.1 +/-    1.66  0.040 / 0.090
G30     349.7          68.8                2.9 +/-    0.37       3.1 +/-    0.37  0.100 / 0.110