PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-19:27:50
G07     326.3          55.3               14.1 +/-    0.46      16.7 +/-    0.46  0.040 / 0.060
G08     113.1          50.8               15.2 +/-    0.48      19.0 +/-    0.48  0.040 / 0.050
G09     204.7          78.4               12.8 +/-    0.40      13.1 +/-    0.40  0.040 / 0.080
G11     150.2          9.9                -3.4 +/-   21.04      -9.6 +/-   21.04  0.050 / 0.070
G16     45.8           9.9                11.1 +/-    4.14      30.9 +/-    4.14  0.050 / 0.040
G23     152.9          42.7               12.8 +/-    0.78      17.9 +/-    0.78  0.040 / 0.050
G27     58.6           33.2               12.3 +/-    1.27      20.1 +/-    1.27  0.100 / 0.100
G28     234.4          26.7               13.7 +/-    1.42      25.7 +/-    1.42  0.100 / 0.090
G30     300.1          34.5               12.4 +/-    1.27      19.9 +/-    1.27  0.100 / 0.240