PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-10:28:00
G05     49.3           15.2                2.1 +/-    2.13       5.1 +/-    2.13  0.150 / 0.190
G10     236.6          12.4                3.0 +/-    5.61       7.8 +/-    5.61  0.060 / 0.190
G13     75.8           36.9                5.9 +/-    1.16       9.0 +/-    1.16  0.040 / 0.070
G15     120.3          52.8                5.7 +/-    0.67       7.0 +/-    0.67  0.050 / 0.060
G16     314.9          11.7                2.0 +/-    8.24       5.4 +/-    8.24  0.340 / 0.450
G20     18.2           70.9                3.8 +/-    0.37       4.0 +/-    0.37  0.190 / 0.320
G21     315.6          49.3                2.5 +/-    0.91       3.2 +/-    0.91  0.110 / 0.280
G25     199.7          10.6                2.1 +/-    1.35       5.8 +/-    1.35  0.210 / 0.340
G26     287.0          20.3                5.6 +/-    2.17      12.3 +/-    2.17  0.030 / 0.030
G29     155.1          69.7                6.3 +/-    0.88       6.7 +/-    0.88  0.040 / 0.040