PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-09:42:50
G01     118.8          18.1                4.5 +/-    1.51      10.4 +/-    1.51  0.030 / 0.030
G07     82.8           65.8                6.0 +/-    0.46       6.5 +/-    0.46  0.030 / 0.040
G08     44.2           29.4                3.7 +/-    1.70       6.6 +/-    1.70  0.150 / 0.180
G09     173.8          21.5                5.4 +/-    1.27      11.4 +/-    1.27  0.150 / 0.200
G11     104.7          40.2                6.0 +/-    1.17       8.7 +/-    1.17  0.030 / 0.020
G13     317.4          20.1                1.5 +/-    1.94       3.4 +/-    1.94  0.030 / 0.030
G17     201.1          26.4                3.3 +/-    1.02       6.3 +/-    1.02  0.060 / 0.050
G18     92.5           20.9                5.9 +/-    1.68      12.7 +/-    1.68  0.070 / 0.050
G28     292.0          57.0                3.2 +/-    1.39       3.7 +/-    1.39  0.120 / 0.210
G30     343.9          67.9                4.0 +/-    0.54       4.3 +/-    0.54  0.120 / 0.250