PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/06-09:57:40
G01     67.9           32.5                4.2 +/-    2.21       7.0 +/-    2.21  0.040 / 0.040
G07     138.7          27.8                5.5 +/-    1.04      10.1 +/-    1.04  0.040 / 0.040
G11     51.2           27.9                2.0 +/-    2.08       3.7 +/-    2.08  0.060 / 0.100
G13     270.9          37.4                5.8 +/-    1.42       8.8 +/-    1.42  0.060 / 0.110
G15     304.2          13.6                2.9 +/-    1.80       7.5 +/-    1.80  0.130 / 0.360
G17     239.8          73.3                6.1 +/-    1.64       6.3 +/-    1.64  0.130 / 0.450
G18     45.9           15.8                1.5 +/-    2.23       3.7 +/-    2.23  0.050 / 0.090
G19     225.6          40.1                6.0 +/-    2.36       8.8 +/-    2.36  0.060 / 0.100
G28     21.7           59.2                4.5 +/-    1.53       5.1 +/-    1.53  0.080 / 0.090
G30     138.3          61.2                6.9 +/-    1.23       7.8 +/-    1.23  0.060 / 0.090