PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-07:12:40
G08     315.3          15.0                2.2 +/-    1.59       5.4 +/-    1.59  0.110 / 0.230
G10     323.3          58.5                3.6 +/-    0.71       4.1 +/-    0.71  0.090 / 0.300
G14     216.4          22.2                8.2 +/-    1.32      17.1 +/-    1.32  0.060 / 0.080
G15     46.2           14.3                1.7 +/-    1.38       4.2 +/-    1.38  0.070 / 0.070
G20     60.2           46.4                4.2 +/-    0.64       5.6 +/-    0.64  0.070 / 0.110
G21     129.2          61.7                7.4 +/-    0.77       8.3 +/-    0.77  0.070 / 0.100
G24     79.0           30.0                5.4 +/-    0.62       9.5 +/-    0.62  0.040 / 0.040
G27     280.2          37.8                4.2 +/-    1.58       6.3 +/-    1.58  0.040 / 0.040
G32     219.6          49.7                7.3 +/-    1.61       9.3 +/-    1.61  0.050 / 0.050