PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-20:12:50
G03     189.6          21.9               15.2 +/-    2.04      32.1 +/-    2.04  0.050 / 0.080
G07     286.8          35.2               13.5 +/-    0.89      21.4 +/-    0.89  0.050 / 0.090
G08     146.4          24.3               18.7 +/-    1.77      37.1 +/-    1.77  0.090 / 0.160
G09     320.4          58.3               12.9 +/-    0.69      14.9 +/-    0.69  0.110 / 0.160
G16     43.8           42.3               12.7 +/-    1.13      17.8 +/-    1.13  0.040 / 0.070
G23     103.6          80.0               13.4 +/-    0.55      13.6 +/-    0.55  0.050 / 0.070
G26     43.1           13.6                9.3 +/-    2.46      23.9 +/-    2.46  0.040 / 0.030
G27     102.3          32.4               15.4 +/-    1.35      25.8 +/-    1.35  0.030 / 0.020
G30     272.5          13.7               12.7 +/-    3.76      32.7 +/-    3.76  0.060 / 0.090