PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-00:12:40
G01     116.2          20.0               12.3 +/-    1.72      27.1 +/-    1.72  0.050 / 0.120
G07     88.0           65.0                9.0 +/-    0.82       9.8 +/-    0.82  0.050 / 0.140
G08     44.4           30.7                7.8 +/-    1.02      13.5 +/-    1.02  0.050 / 0.090
G09     177.3          23.7               10.0 +/-    2.68      20.1 +/-    2.68  0.050 / 0.100
G11     106.1          41.1               10.3 +/-    1.39      14.7 +/-    1.39  0.040 / 0.070
G13     316.5          21.2                4.1 +/-    2.43       8.8 +/-    2.43  0.040 / 0.060
G17     203.1          26.6               12.9 +/-    1.73      24.3 +/-    1.73  0.120 / 0.180
G28     300.1          58.9                9.5 +/-    1.06      10.9 +/-    1.06  0.120 / 0.160
G30     7.2            73.7                8.3 +/-    1.91       8.6 +/-    1.91  0.070 / 0.360