PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-12:57:40
G01     63.6           31.4                5.0 +/-    1.27       8.5 +/-    1.27  0.030 / 0.020
G06     181.5          11.6               -5.4 +/-   27.84     -14.4 +/-   27.84  0.030 / 0.040
G07     140.5          23.0                3.8 +/-    1.42       7.9 +/-    1.42  0.070 / 0.110
G11     49.3           24.1                4.5 +/-    1.36       8.9 +/-    1.36  0.060 / 0.100
G13     269.4          35.8                3.8 +/-    1.67       5.9 +/-    1.67  0.100 / 0.160
G15     298.7          15.7                0.5 +/-    1.62       1.3 +/-    1.62  0.080 / 0.190
G17     252.7          76.7                3.5 +/-    0.39       3.6 +/-    0.39  0.140 / 0.330
G19     229.8          49.7                5.3 +/-    2.23       6.8 +/-    2.23  0.140 / 0.260
G28     30.8           57.4                3.1 +/-    0.58       3.6 +/-    0.58  0.050 / 0.130
G30     140.7          57.4                4.0 +/-    0.67       4.7 +/-    0.67  0.080 / 0.110