PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-00:27:30
G03     230.9          66.0                4.9 +/-    0.49       5.3 +/-    0.49  0.060 / 0.070
G07     250.7          11.1                2.2 +/-   17.96       6.0 +/-   17.96  0.040 / 0.060
G09     306.8          24.3                3.9 +/-    1.32       7.7 +/-    1.32  0.100 / 0.540
G14     102.8          11.5                4.0 +/-    2.80      10.8 +/-    2.80  0.120 / 0.570
G16     118.6          61.3                7.0 +/-    0.58       7.9 +/-    0.58  0.040 / 0.040
G22     194.2          51.9                6.9 +/-    0.75       8.5 +/-    0.75  0.050 / 0.040
G23     320.6          50.4                3.9 +/-    0.94       4.9 +/-    0.94  0.080 / 0.570
G26     64.9           50.5                3.5 +/-    0.46       4.4 +/-    0.46  0.100 / 0.500
G31     53.7           18.6                2.4 +/-    1.00       5.4 +/-    1.00  0.040 / 0.050