PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/19-23:42:40
G01     227.9          18.8                9.9 +/-    1.78      22.3 +/-    1.78  0.030 / 0.030
G03     294.1          65.6                4.5 +/-    1.66       4.9 +/-    1.66  0.040 / 0.030
G14     84.5           25.3                7.8 +/-    2.37      15.2 +/-    2.37  0.040 / 0.080
G16     148.4          42.5                9.1 +/-    0.96      12.7 +/-    0.96  0.040 / 0.080
G22     226.2          72.4                7.1 +/-    0.65       7.4 +/-    0.65  0.090 / 0.190
G23     304.5          33.9                7.3 +/-    1.34      11.9 +/-    1.34  0.100 / 0.230
G26     104.0          53.9                6.6 +/-    0.51       8.0 +/-    0.51  0.030 / 0.040
G31     43.8           36.4                5.0 +/-    0.92       7.8 +/-    0.92  0.030 / 0.030