PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-17:57:40
G03     189.0          20.2               11.7 +/-    1.86      25.5 +/-    1.86  0.050 / 0.080
G07     288.5          36.1               11.5 +/-    1.94      17.9 +/-    1.94  0.050 / 0.090
G08     147.0          25.0               13.5 +/-    1.58      26.4 +/-    1.58  0.150 / 0.340
G09     320.4          60.5               10.5 +/-    0.89      11.9 +/-    0.89  0.150 / 0.330
G16     43.1           39.4                8.0 +/-    0.88      11.7 +/-    0.88  0.050 / 0.080
G23     114.9          76.9               11.2 +/-    0.80      11.4 +/-    0.80  0.040 / 0.080
G26     43.3           11.4                8.1 +/-    4.10      21.9 +/-    4.10  0.030 / 0.040
G27     100.4          33.2               12.7 +/-    0.58      20.8 +/-    0.58  0.030 / 0.030
G30     273.4          13.6               11.5 +/-    2.78      29.5 +/-    2.78  0.040 / 0.110