PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-00:42:30
G01     228.7          19.4                6.2 +/-    1.30      13.9 +/-    1.30  0.030 / 0.030
G03     295.7          64.6                1.1 +/-    0.62       1.2 +/-    0.62  0.030 / 0.030
G14     84.2           25.5                4.4 +/-    1.45       8.6 +/-    1.45  0.040 / 0.070
G16     155.6          39.0                7.7 +/-    0.80      11.4 +/-    0.80  0.040 / 0.060
G22     229.4          73.3                3.0 +/-    0.58       3.1 +/-    0.58  0.070 / 0.110
G23     304.2          33.9                4.5 +/-    0.64       7.3 +/-    0.64  0.090 / 0.100
G26     109.4          53.9                4.9 +/-    0.43       5.9 +/-    0.43  0.110 / 0.190
G31     42.8           38.4                0.9 +/-    0.46       1.4 +/-    0.46  0.210 / 0.270