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               11.9 +/-    1.79      26.1 +/-    1.79  0.040 / 0.050
G07     88.0           65.0               10.8 +/-    1.12      11.8 +/-    1.12  0.040 / 0.040
G08     44.4           30.7                7.9 +/-    1.71      13.7 +/-    1.71  0.120 / 0.130
G09     177.3          23.7               12.4 +/-    1.04      25.0 +/-    1.04  0.080 / 0.100
G11     106.1          41.1                9.8 +/-    1.10      14.1 +/-    1.10  0.060 / 0.080
G13     316.5          21.2                8.3 +/-    1.81      17.8 +/-    1.81  0.060 / 0.100
G17     203.1          26.6               10.5 +/-    2.44      19.8 +/-    2.44  0.150 / 0.160
G28     300.1          58.9                9.0 +/-    1.08      10.4 +/-    1.08  0.150 / 0.190
G30     7.2            73.7               10.0 +/-    0.42      10.3 +/-    0.42  0.270 / 0.270