PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-20:12:30
G03     189.6          21.9               14.2 +/-    1.09      30.0 +/-    1.09  0.040 / 0.080
G07     286.8          35.2               12.0 +/-    1.36      19.0 +/-    1.36  0.040 / 0.080
G08     146.4          24.3               18.7 +/-    1.67      37.1 +/-    1.67  0.110 / 0.190
G09     320.4          58.3               12.0 +/-    0.97      13.8 +/-    0.97  0.100 / 0.160
G16     43.8           42.3               12.1 +/-    0.85      16.9 +/-    0.85  0.050 / 0.070
G23     103.6          80.0               11.2 +/-    0.35      11.3 +/-    0.35  0.050 / 0.070
G26     43.1           13.6                8.4 +/-    0.79      21.7 +/-    0.79  0.040 / 0.040
G27     102.3          32.4               15.6 +/-    0.46      26.0 +/-    0.46  0.030 / 0.040
G30     272.5          13.7               13.5 +/-    1.12      34.6 +/-    1.12  0.060 / 0.100