PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-11:28:00
G01     95.0           30.4                3.3 +/-    0.69       5.7 +/-    0.69  0.030 / 0.050
G07     121.6          46.9                4.3 +/-    0.72       5.6 +/-    0.72  0.030 / 0.060
G11     72.6           39.4                4.3 +/-    0.52       6.3 +/-    0.52  0.050 / 0.040
G13     301.3          32.9                4.0 +/-    1.27       6.7 +/-    1.27  0.030 / 0.030
G17     211.1          51.8                8.1 +/-    0.47      10.0 +/-    0.47  0.040 / 0.050
G19     212.6          24.7                7.8 +/-    2.59      15.4 +/-    2.59  0.040 / 0.060
G28     341.3          61.7                3.2 +/-    0.55       3.6 +/-    0.55  0.060 / 0.140
G30     77.9           79.4                4.3 +/-    0.35       4.3 +/-    0.35  0.060 / 0.110