PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/07-21:43:10
G07     359.0          65.4               10.7 +/-    0.55      11.7 +/-    0.55  0.050 / 0.110
G08     76.9           53.1               12.4 +/-    0.89      15.1 +/-    0.89  0.060 / 0.090
G09     182.7          58.0               13.6 +/-    0.65      15.7 +/-    0.65  0.150 / 0.110
G11     138.2          22.1               13.1 +/-    2.61      27.4 +/-    2.61  0.250 / 0.210
G23     158.5          24.0               12.4 +/-    1.96      24.9 +/-    1.96  0.030 / 0.040
G27     43.3           21.5                9.4 +/-    1.40      20.0 +/-    1.40  0.030 / 0.030
G28     251.8          41.5               12.2 +/-    1.76      17.3 +/-    1.76  0.030 / 0.040
G30     317.4          48.6               10.0 +/-    0.85      12.8 +/-    0.85  0.040 / 0.040