PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-14:12:30
G08     297.2          21.7                3.7 +/-    2.28       7.9 +/-    2.28  0.110 / 0.160
G10     2.5            62.9                3.1 +/-    0.86       3.5 +/-    0.86  0.080 / 0.080
G14     228.5          43.5                6.6 +/-    1.71       9.1 +/-    1.71  0.040 / 0.070
G21     145.0          39.5                7.1 +/-    0.96      10.3 +/-    0.96  0.040 / 0.070
G24     58.3           26.9                4.8 +/-    0.93       9.1 +/-    0.93  0.100 / 0.090
G27     255.1          32.3                3.8 +/-    2.31       6.3 +/-    2.31  0.090 / 0.100
G32     243.4          66.9                5.3 +/-    0.50       5.7 +/-    0.50  0.070 / 0.090