PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-09:57:50
G01     84.0           32.9                3.8 +/-    1.43       6.3 +/-    1.43  0.050 / 0.050
G07     130.0          40.0                6.6 +/-    0.52       9.6 +/-    0.52  0.070 / 0.050
G11     61.7           36.5                4.1 +/-    0.87       6.3 +/-    0.87  0.020 / 0.030
G13     288.0          37.6                1.9 +/-    0.98       2.8 +/-    0.98  0.030 / 0.030
G17     218.5          60.7                6.3 +/-    1.14       7.1 +/-    1.14  0.050 / 0.110
G18     57.2           21.7                2.7 +/-    3.28       5.6 +/-    3.28  0.070 / 0.090
G19     217.3          27.8                5.3 +/-    2.84       9.8 +/-    2.84  0.080 / 0.090
G28     357.0          61.4                4.2 +/-    0.62       4.7 +/-    0.62  0.070 / 0.080
G30     117.3          73.8                6.1 +/-    0.92       6.4 +/-    0.92  0.140 / 0.200