PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-11:43:00
G01     111.2          23.0                4.8 +/-    0.97       9.8 +/-    0.97  0.030 / 0.040
G07     101.0          59.0                5.8 +/-    0.41       6.6 +/-    0.41  0.030 / 0.040
G08     42.3           22.4                3.0 +/-    1.52       6.3 +/-    1.52  0.030 / 0.040
G09     174.0          15.7                6.1 +/-    1.62      14.8 +/-    1.62  0.030 / 0.030
G11     93.0           40.7                4.6 +/-    0.57       6.6 +/-    0.57  0.140 / 0.210
G13     314.3          23.7                3.4 +/-    2.05       6.8 +/-    2.05  0.100 / 0.260
G17     203.5          35.7                7.3 +/-    1.71      11.5 +/-    1.71  0.070 / 0.080
G19     207.7          10.4               -2.9 +/-    8.77      -7.9 +/-    8.77  0.060 / 0.080
G28     309.6          60.0                4.7 +/-    0.69       5.3 +/-    0.69  0.090 / 0.190
G30     0.9            74.0                5.1 +/-    0.75       5.3 +/-    0.75  0.080 / 0.190