PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-00:42:50
G01     319.6          15.9               10.4 +/-    3.13      25.3 +/-    3.13  0.030 / 0.030
G08     258.2          14.4               11.6 +/-    4.46      29.2 +/-    4.46  0.030 / 0.030
G10     74.7           55.4                9.8 +/-    1.22      11.7 +/-    1.22  0.230 / 0.230
G11     304.3          23.0               11.4 +/-    1.58      23.2 +/-    1.58  0.160 / 0.240
G14     292.9          70.8                9.9 +/-    0.73      10.5 +/-    0.73  0.050 / 0.070
G18     99.5           30.8                8.6 +/-    1.05      14.8 +/-    1.05  0.060 / 0.050
G31     179.0          36.8               14.6 +/-    1.58      22.5 +/-    1.58  0.050 / 0.050
G32     352.3          70.7                9.7 +/-    1.25      10.2 +/-    1.25  0.050 / 0.040