PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/20-00:28:10
G01     319.6          16.8                6.7 +/-    1.61      15.9 +/-    1.61  0.190 / 0.230
G08     257.2          13.9                7.2 +/-    1.91      18.4 +/-    1.91  0.170 / 0.220
G10     77.9           53.6                8.9 +/-    0.67      10.8 +/-    0.67  0.040 / 0.060
G11     303.6          23.0                6.1 +/-    0.87      12.4 +/-    0.87  0.040 / 0.030
G14     290.8          70.0                6.7 +/-    0.58       7.1 +/-    0.58  0.080 / 0.220
G18     305.2          40.3                7.0 +/-    1.79      10.1 +/-    1.79  0.080 / 0.140
G20     104.2          30.1                8.2 +/-    0.67      14.3 +/-    0.67  0.110 / 0.320
G31     175.9          41.0                9.5 +/-    1.44      13.5 +/-    1.44  0.150 / 0.350
G32     7.5            67.8                6.1 +/-    0.55       6.5 +/-    0.55  0.060 / 0.100