PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-04:28:00
G10     258.5          32.6               12.0 +/-    1.42      19.9 +/-    1.42  0.120 / 0.310
G13     46.7           24.6                6.2 +/-    1.40      12.3 +/-    1.40  0.110 / 0.330
G15     70.7           54.5                7.1 +/-    0.47       8.5 +/-    0.47  0.040 / 0.050
G16     286.2          14.5                8.0 +/-    1.90      20.0 +/-    1.90  0.040 / 0.050
G20     306.4          66.6                7.7 +/-    0.60       8.3 +/-    0.60  0.170 / 0.210
G21     345.0          66.0                5.2 +/-    0.98       5.7 +/-    0.98  0.110 / 0.170
G26     258.5          11.8               12.3 +/-    2.30      33.0 +/-    2.30  0.060 / 0.190
G27     321.5          12.4                7.4 +/-    3.05      19.5 +/-    3.05  0.060 / 0.210
G29     167.1          40.9                9.7 +/-    1.42      13.9 +/-    1.42  0.030 / 0.050