PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-17:57:50
G01     228.9          19.4                9.7 +/-    1.46      21.7 +/-    1.46  0.050 / 0.080
G03     289.0          68.8                7.1 +/-    0.49       7.5 +/-    0.49  0.040 / 0.070
G14     82.9           27.7                8.2 +/-    1.10      15.1 +/-    1.10  0.040 / 0.070
G16     150.0          41.7               13.0 +/-    0.92      18.4 +/-    0.92  0.040 / 0.080
G22     219.0          72.7                8.4 +/-    1.22       8.8 +/-    1.22  0.030 / 0.030
G23     305.8          36.5                8.3 +/-    1.16      12.8 +/-    1.16  0.030 / 0.040
G26     102.3          53.3               10.8 +/-    0.63      13.1 +/-    0.63  0.090 / 0.210
G31     44.2           34.3                6.6 +/-    1.31      10.7 +/-    1.31  0.090 / 0.170