PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/04-18:42:50
G01     222.8          14.0                9.6 +/-    6.08      24.6 +/-    6.08  0.040 / 0.070
G03     270.9          70.7                9.0 +/-    0.43       9.5 +/-    0.43  0.040 / 0.090
G09     296.6          10.6               -7.5 +/-   33.29     -20.6 +/-   33.29  0.040 / 0.060
G14     90.7           20.6                8.4 +/-    1.62      18.2 +/-    1.62  0.040 / 0.060
G16     146.9          47.4                9.9 +/-    0.70      12.9 +/-    0.70  0.220 / 0.430
G22     204.7          65.9                9.5 +/-    0.62      10.3 +/-    0.62  0.210 / 0.510
G23     309.6          39.0                8.5 +/-    0.94      12.5 +/-    0.94  0.100 / 0.290
G26     98.0           56.5                8.9 +/-    0.71      10.4 +/-    0.71  0.090 / 0.210
G31     45.9           32.3                7.2 +/-    0.63      12.0 +/-    0.63  0.070 / 0.090