PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-16:58:10
G02     200.5          15.3               10.7 +/-    3.01      26.3 +/-    3.01  0.100 / 0.200
G06     170.3          50.8               12.8 +/-    0.92      16.0 +/-    0.92  0.120 / 0.260
G13     230.1          15.8               10.2 +/-    1.83      24.9 +/-    1.83  0.160 / 0.360
G17     16.5           63.2               10.7 +/-    0.85      11.8 +/-    0.85  0.200 / 0.330
G19     299.2          70.1               12.2 +/-    0.82      12.9 +/-    0.82  0.070 / 0.130
G24     311.9          27.6               10.3 +/-    1.51      19.0 +/-    1.51  0.080 / 0.170
G28     83.1           42.1               11.2 +/-    0.94      15.7 +/-    0.94  0.090 / 0.290
G30     156.9          19.3               11.1 +/-    1.75      24.9 +/-    1.75  0.130 / 0.290