PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-13:12:50
G01     54.6           28.0                5.9 +/-    2.43      10.8 +/-    2.43  0.080 / 0.150
G06     179.4          19.5                6.3 +/-    1.67      14.0 +/-    1.67  0.070 / 0.130
G07     144.2          15.0                7.2 +/-    3.29      17.8 +/-    3.29  0.220 / 0.260
G11     45.6           17.3                5.8 +/-    2.41      13.7 +/-    2.41  0.130 / 0.330
G13     258.9          32.8                3.5 +/-    1.57       5.8 +/-    1.57  0.050 / 0.040
G15     290.4          16.0                5.2 +/-    1.47      12.5 +/-    1.47  0.050 / 0.040
G17     298.7          80.0                6.8 +/-    0.52       6.9 +/-    0.52  0.020 / 0.020
G19     240.1          57.6                5.8 +/-    2.23       6.8 +/-    2.23  0.030 / 0.020
G28     45.0           54.6                8.0 +/-    0.62       9.6 +/-    0.62  0.150 / 0.120
G30     146.9          48.4                6.1 +/-    0.68       7.8 +/-    0.68  0.140 / 0.090