PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-11:12:40
G01     121.6          15.9                6.3 +/-    2.21      15.3 +/-    2.21  0.150 / 0.340
G07     76.6           65.9                8.3 +/-    0.39       9.0 +/-    0.39  0.150 / 0.330
G08     45.8           32.4                4.7 +/-    0.79       7.9 +/-    0.79  0.040 / 0.030
G09     175.5          27.0                6.7 +/-    1.60      12.6 +/-    1.60  0.030 / 0.020
G11     108.3          37.4                8.4 +/-    1.02      12.8 +/-    1.02  0.040 / 0.030
G13     320.0          14.9                3.0 +/-    2.63       7.4 +/-    2.63  0.020 / 0.020
G17     200.3          23.7                7.8 +/-    3.02      15.6 +/-    3.02  0.050 / 0.050
G28     287.8          56.2                6.4 +/-    1.98       7.5 +/-    1.98  0.090 / 0.060
G30     339.1          64.5                6.9 +/-    0.93       7.6 +/-    0.93  0.140 / 0.340