PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-10:43:10
G01     52.1           26.6                2.7 +/-    1.02       5.1 +/-    1.02  0.050 / 0.060
G06     179.8          21.2                3.8 +/-    1.15       8.2 +/-    1.15  0.040 / 0.060
G07     145.3          13.2                4.0 +/-    2.99      10.3 +/-    2.99  0.120 / 0.250
G11     45.0           15.8                0.7 +/-    1.44       1.8 +/-    1.44  0.120 / 0.310
G13     255.1          31.5                5.0 +/-    1.10       8.5 +/-    1.10  0.090 / 0.400
G15     286.5          16.1                2.8 +/-    2.33       6.8 +/-    2.33  0.090 / 0.360
G17     313.8          79.4                3.9 +/-    0.85       3.9 +/-    0.85  0.020 / 0.020
G19     244.3          59.9                5.6 +/-    0.65       6.4 +/-    0.65  0.020 / 0.020
G28     49.7           53.4                2.3 +/-    0.38       2.8 +/-    0.38  0.060 / 0.110
G30     148.4          44.4                4.5 +/-    0.84       6.1 +/-    0.84  0.060 / 0.110