PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-07:42:50
G10     257.8          32.0                8.0 +/-    1.67      13.5 +/-    1.67  0.090 / 0.210
G13     47.4           25.3                5.4 +/-    1.92      10.4 +/-    1.92  0.110 / 0.250
G15     70.3           53.8                5.7 +/-    0.61       6.9 +/-    0.61  0.140 / 0.160
G16     287.7          14.4                3.9 +/-    1.10       9.7 +/-    1.10  0.100 / 0.190
G20     21.2           63.8                5.4 +/-    0.67       6.0 +/-    0.67  0.050 / 0.040
G21     345.8          66.1                6.4 +/-    0.48       7.0 +/-    0.48  0.050 / 0.040
G26     259.5          12.1                6.6 +/-    1.16      17.7 +/-    1.16  0.030 / 0.040
G27     321.6          12.2                0.9 +/-    9.55       2.3 +/-    9.55  0.030 / 0.030
G29     166.6          40.8                8.3 +/-    0.82      11.9 +/-    0.82  0.050 / 0.050