PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-02:27:50
G01     66.0           32.2                4.6 +/-    1.52       7.7 +/-    1.52  0.040 / 0.030
G07     139.7          27.4                5.6 +/-    1.46      10.4 +/-    1.46  0.050 / 0.050
G11     52.4           29.7                4.2 +/-    1.20       7.4 +/-    1.20  0.040 / 0.100
G13     270.3          36.5                5.6 +/-    1.42       8.7 +/-    1.42  0.080 / 0.110
G15     298.1          16.4                5.0 +/-    1.54      12.1 +/-    1.54  0.030 / 0.030
G17     241.6          71.4                7.2 +/-    0.31       7.5 +/-    0.31  0.030 / 0.030
G19     227.7          46.4                6.8 +/-    2.11       9.0 +/-    2.11  0.040 / 0.060
G28     28.0           57.9                5.9 +/-    1.96       6.9 +/-    1.96  0.060 / 0.060
G30     138.8          53.3                6.5 +/-    0.58       7.9 +/-    0.58  0.060 / 0.110