PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-00:42:40
G01     112.3          22.6                7.1 +/-    1.36      14.6 +/-    1.36  0.040 / 0.050
G07     97.2           62.3                7.4 +/-    0.92       8.2 +/-    0.92  0.050 / 0.050
G08     43.1           26.8                4.1 +/-    1.61       7.7 +/-    1.61  0.060 / 0.070
G09     176.6          19.5                9.2 +/-    2.16      20.5 +/-    2.16  0.180 / 0.110
G11     100.0          42.4                7.7 +/-    0.49      10.8 +/-    0.49  0.080 / 0.110
G13     314.0          24.3                5.6 +/-    1.21      11.1 +/-    1.21  0.090 / 0.110
G17     204.3          31.2                7.9 +/-    1.11      13.6 +/-    1.11  0.090 / 0.120
G28     308.5          60.1                6.6 +/-    0.99       7.5 +/-    0.99  0.090 / 0.130
G30     22.3           76.2                7.1 +/-    0.41       7.3 +/-    0.41  0.030 / 0.030