PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-14:58:00
G01     320.6          12.6                4.6 +/-    2.44      12.2 +/-    2.44  0.050 / 0.080
G08     265.7          16.0                8.2 +/-    2.22      19.9 +/-    2.22  0.060 / 0.100
G10     68.9           56.8                6.7 +/-    0.91       7.8 +/-    0.91  0.160 / 0.520
G11     310.3          17.7                8.6 +/-    1.39      19.9 +/-    1.39  0.140 / 0.430
G14     275.5          67.3                8.1 +/-    0.91       8.7 +/-    0.91  0.030 / 0.050
G27     227.6          12.5                7.2 +/-    6.81      19.0 +/-    6.81  0.040 / 0.050
G31     177.0          35.7               11.4 +/-    0.91      17.9 +/-    0.91  0.240 / 0.290
G32     355.0          71.3                8.1 +/-    0.55       8.5 +/-    0.55  0.210 / 0.280