PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-19:43:10
G07     337.0          59.4               14.1 +/-    0.40      16.1 +/-    0.40  0.030 / 0.040
G08     100.7          53.7               15.1 +/-    0.47      18.3 +/-    0.47  0.040 / 0.050
G09     189.9          70.9               15.0 +/-    0.39      15.8 +/-    0.39  0.050 / 0.070
G11     145.6          14.5               15.0 +/-    1.55      37.8 +/-    1.55  0.070 / 0.110
G23     155.4          35.0               13.8 +/-    1.40      21.8 +/-    1.40  0.030 / 0.050
G27     51.7           29.4               13.1 +/-    1.41      23.3 +/-    1.41  0.030 / 0.040
G28     240.2          32.6               14.7 +/-    2.22      24.4 +/-    2.22  0.070 / 0.100
G30     306.2          39.4               13.5 +/-    0.99      19.8 +/-    0.99  0.100 / 0.080