PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-05:58:00
G07     314.5          50.3                4.2 +/-    0.86       5.3 +/-    0.86  0.110 / 0.490
G08     119.5          44.7                9.6 +/-    0.98      13.0 +/-    0.98  0.110 / 0.480
G09     269.1          83.3                5.0 +/-    0.94       5.0 +/-    0.94  0.070 / 0.150
G16     42.3           24.4                2.5 +/-    1.09       5.0 +/-    1.09  0.080 / 0.170
G23     148.6          59.8                9.0 +/-    0.46      10.2 +/-    0.46  0.040 / 0.050
G27     71.0           36.2                4.6 +/-    0.72       7.2 +/-    0.72  0.040 / 0.050
G28     227.1          17.7                4.2 +/-    3.26       9.7 +/-    3.26  0.130 / 0.230
G30     289.7          25.0                5.5 +/-    1.49      10.7 +/-    1.49  0.070 / 0.060