PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-10:28:10
G01     62.5           31.2                3.0 +/-    0.47       5.1 +/-    0.47  0.030 / 0.050
G06     182.1          11.5               -3.6 +/-   30.11      -9.8 +/-   30.11  0.040 / 0.060
G07     141.1          22.8                4.6 +/-    1.18       9.4 +/-    1.18  0.030 / 0.030
G11     49.1           24.1                2.3 +/-    1.82       4.7 +/-    1.82  0.030 / 0.030
G13     267.6          35.6                6.2 +/-    1.93       9.7 +/-    1.93  0.050 / 0.130
G15     296.6          16.3                4.0 +/-    2.59       9.7 +/-    2.59  0.040 / 0.150
G17     256.0          77.0                4.4 +/-    0.78       4.5 +/-    0.78  0.090 / 0.210
G19     230.8          50.5                6.1 +/-    1.12       7.7 +/-    1.12  0.090 / 0.300
G28     32.9           57.1                2.4 +/-    0.40       2.8 +/-    0.40  0.050 / 0.090
G30     141.5          55.3                4.8 +/-    0.88       5.7 +/-    0.88  0.050 / 0.090