PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-04:57:40
G10     247.7          24.0                6.0 +/-    1.87      12.0 +/-    1.87  0.130 / 0.560
G13     57.1           32.0                5.2 +/-    0.60       8.8 +/-    0.60  0.150 / 0.630
G15     93.4           57.7                6.3 +/-    0.59       7.3 +/-    0.59  0.120 / 0.190
G16     298.5          15.7                4.5 +/-    1.69      11.0 +/-    1.69  0.090 / 0.170
G20     292.7          67.9                4.7 +/-    0.60       5.0 +/-    0.60  0.040 / 0.060
G21     329.1          57.5                4.7 +/-    0.71       5.4 +/-    0.71  0.050 / 0.050
G26     269.8          17.0                7.9 +/-    1.58      18.8 +/-    1.58  0.060 / 0.150
G29     164.1          54.4                7.7 +/-    0.93       9.3 +/-    0.93  0.050 / 0.130