PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-06:28:10
G07     306.4          46.6                5.3 +/-    1.89       7.0 +/-    1.89  0.110 / 0.070
G08     126.2          40.4                8.1 +/-    0.80      11.7 +/-    0.80  0.100 / 0.080
G09     292.6          84.4                4.0 +/-    0.46       4.0 +/-    0.46  0.090 / 0.130
G16     42.0           23.8                2.0 +/-    1.42       4.1 +/-    1.42  0.100 / 0.230
G23     143.7          66.2                6.5 +/-    0.63       7.0 +/-    0.63  0.060 / 0.050
G27     82.2           37.7                6.6 +/-    0.80      10.0 +/-    0.80  0.050 / 0.050
G30     284.3          20.1                3.5 +/-    1.26       7.6 +/-    1.26  0.030 / 0.040