PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/20-00:27:50
G01     319.7          16.4                5.8 +/-    0.93      13.9 +/-    0.93  0.160 / 0.250
G08     257.6          14.1                7.6 +/-    2.05      19.3 +/-    2.05  0.190 / 0.290
G10     77.2           53.8                8.3 +/-    0.65      10.0 +/-    0.65  0.150 / 0.280
G11     304.0          22.8                4.4 +/-    3.04       9.0 +/-    3.04  0.130 / 0.180
G14     289.4          69.8                6.3 +/-    0.67       6.6 +/-    0.67  0.040 / 0.070
G18     305.6          40.0                5.4 +/-    1.50       7.8 +/-    1.50  0.040 / 0.060
G20     103.8          30.4               10.3 +/-    1.58      17.8 +/-    1.58  0.140 / 0.240
G27     226.2          10.2                9.7 +/-    4.68      26.9 +/-    4.68  0.080 / 0.290
G31     176.0          40.5               11.4 +/-    1.32      16.4 +/-    1.32  0.140 / 0.310
G32     6.6            68.1                5.7 +/-    0.70       6.1 +/-    0.70  0.150 / 0.290