PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/05-16:28:10
G07     308.5          47.0               17.7 +/-    0.84      23.2 +/-    0.84  0.050 / 0.050
G08     129.8          41.5               17.3 +/-    1.23      24.6 +/-    1.23  0.030 / 0.060
G09     296.7          80.0               16.4 +/-    1.62      16.6 +/-    1.62  0.030 / 0.030
G16     42.3           21.2               11.4 +/-    0.93      24.4 +/-    0.93  0.030 / 0.030
G23     144.4          56.1               18.2 +/-    1.18      21.5 +/-    1.18  0.060 / 0.080
G27     76.3           37.1               14.8 +/-    0.85      22.6 +/-    0.85  0.040 / 0.090
G28     225.1          14.4               16.3 +/-    4.29      41.0 +/-    4.29  0.140 / 0.500
G30     287.8          24.2               18.0 +/-    0.93      35.9 +/-    0.93  0.160 / 0.350