PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/16-17:27:40
G10     282.9          46.6                8.8 +/-    1.28      11.7 +/-    1.28  0.070 / 0.130
G15     50.0           39.9                8.0 +/-    1.18      11.6 +/-    1.18  0.070 / 0.140
G20     326.7          64.6                8.1 +/-    0.52       8.9 +/-    0.52  0.040 / 0.040
G21     59.5           76.4               10.2 +/-    0.65      10.5 +/-    0.65  0.040 / 0.040
G24     104.3          21.7               10.7 +/-    1.04      22.6 +/-    1.04  0.100 / 0.190
G27     311.8          26.9                6.9 +/-    2.30      12.9 +/-    2.30  0.100 / 0.180
G29     168.0          17.0               10.2 +/-    1.17      24.1 +/-    1.17  0.040 / 0.070
G32     206.9          21.4                9.1 +/-    1.60      19.4 +/-    1.60  0.040 / 0.070