PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/16-08:12:40
G01     65.2           31.9                5.5 +/-    1.13       9.3 +/-    1.13  0.050 / 0.050
G07     140.0          25.6                6.8 +/-    1.70      13.0 +/-    1.70  0.060 / 0.050
G11     50.7           26.7                3.3 +/-    1.91       6.3 +/-    1.91  0.070 / 0.100
G13     270.2          36.2                7.3 +/-    1.58      11.3 +/-    1.58  0.080 / 0.100
G15     298.2          16.3                4.9 +/-    2.00      11.8 +/-    2.00  0.120 / 0.260
G17     246.7          74.8                8.2 +/-    0.33       8.5 +/-    0.33  0.130 / 0.250
G19     228.5          48.1                7.4 +/-    2.23       9.5 +/-    2.23  0.030 / 0.030
G28     29.1           57.7                5.2 +/-    1.44       6.1 +/-    1.44  0.030 / 0.020
G30     139.5          56.6                8.1 +/-    0.52       9.5 +/-    0.52  0.040 / 0.070