PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/09-08:57:50
G01     57.2           29.3                2.1 +/-    0.92       3.7 +/-    0.92  0.040 / 0.060
G06     181.6          15.3                7.9 +/-    1.28      19.5 +/-    1.28  0.040 / 0.070
G07     143.4          18.6                6.5 +/-    1.20      14.9 +/-    1.20  0.090 / 0.270
G11     47.0           20.7                1.2 +/-    0.78       2.6 +/-    0.78  0.090 / 0.220
G13     261.1          33.9                3.4 +/-    1.61       5.5 +/-    1.61  0.080 / 0.220
G15     291.2          16.6               -0.3 +/-    1.74      -0.7 +/-    1.74  0.100 / 0.220
G17     279.4          79.1                4.1 +/-    0.47       4.1 +/-    0.47  0.020 / 0.030
G19     236.6          55.0                5.0 +/-    1.47       5.9 +/-    1.47  0.030 / 0.020
G28     41.4           55.4                3.0 +/-    0.46       3.6 +/-    0.46  0.210 / 0.410
G30     145.1          49.2                7.1 +/-    1.02       9.1 +/-    1.02  0.170 / 0.350