PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-10:27:50
G01     110.4          23.7                6.3 +/-    1.15      12.6 +/-    1.15  0.030 / 0.020
G07     101.8          60.2                5.8 +/-    0.61       6.6 +/-    0.61  0.030 / 0.020
G08     42.0           21.6                3.6 +/-    3.21       7.5 +/-    3.21  0.080 / 0.140
G09     172.7          13.1                4.0 +/-    2.75      10.3 +/-    2.75  0.080 / 0.140
G11     92.1           42.4                5.3 +/-    0.74       7.5 +/-    0.74  0.120 / 0.160
G13     312.0          26.7                3.8 +/-    1.57       7.2 +/-    1.57  0.060 / 0.160
G17     204.0          35.7                5.6 +/-    1.17       8.8 +/-    1.17  0.030 / 0.030
G18     82.8           23.5                5.4 +/-    1.51      10.9 +/-    1.51  0.040 / 0.040
G28     309.4          60.0                3.5 +/-    1.14       3.9 +/-    1.14  0.090 / 0.150
G30     3.8            75.4                5.6 +/-    0.50       5.8 +/-    0.50  0.090 / 0.150