PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/18-23:27:50
G03     232.5          66.6                4.7 +/-    0.87       5.1 +/-    0.87  0.040 / 0.050
G09     304.6          19.5                4.2 +/-    1.81       9.4 +/-    1.81  0.040 / 0.050
G14     101.9          12.7                7.4 +/-    1.64      19.4 +/-    1.64  0.290 / 0.420
G16     129.9          60.3                8.4 +/-    0.46       9.5 +/-    0.46  0.220 / 0.310
G22     194.2          53.6                6.6 +/-    0.53       8.0 +/-    0.53  0.030 / 0.030
G23     320.6          50.4                5.0 +/-    1.06       6.3 +/-    1.06  0.030 / 0.030
G26     67.6           51.9                4.7 +/-    0.95       5.8 +/-    0.95  0.120 / 0.130
G31     52.9           19.4                2.7 +/-    3.30       6.1 +/-    3.30  0.100 / 0.230