PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/14-13:12:40
G08     288.4          23.8                4.3 +/-    1.88       8.6 +/-    1.88  0.260 / 0.250
G10     16.3           62.8                5.0 +/-    1.25       5.5 +/-    1.25  0.140 / 0.140
G14     232.6          50.2                6.8 +/-    2.55       8.5 +/-    2.55  0.070 / 0.100
G18     317.4          15.9                2.5 +/-    2.92       6.1 +/-    2.92  0.110 / 0.080
G20     70.0           50.3                4.8 +/-    0.87       6.1 +/-    0.87  0.050 / 0.110
G21     147.2          32.3                5.5 +/-    0.90       9.1 +/-    0.90  0.060 / 0.100
G24     51.4           22.1                4.0 +/-    4.00       8.3 +/-    4.00  0.190 / 0.330
G27     253.9          30.3                4.9 +/-    2.43       8.5 +/-    2.43  0.350 / 0.280
G32     249.2          67.2                5.2 +/-    0.58       5.6 +/-    0.58  0.050 / 0.020