PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-03:57:40
G10     246.7          23.2               13.4 +/-    1.96      27.3 +/-    1.96  0.100 / 0.310
G13     58.3           32.5                7.8 +/-    1.89      13.0 +/-    1.89  0.120 / 0.290
G15     96.7           57.9               10.9 +/-    0.83      12.7 +/-    0.83  0.040 / 0.040
G16     299.5          15.7                8.6 +/-    2.10      21.0 +/-    2.10  0.040 / 0.050
G20     276.2          60.8               11.1 +/-    1.27      12.5 +/-    1.27  0.060 / 0.120
G21     327.5          56.5                9.7 +/-    0.43      11.3 +/-    0.43  0.070 / 0.110
G26     270.9          17.4               11.5 +/-    2.74      26.9 +/-    2.74  0.030 / 0.030
G29     163.8          56.0               11.7 +/-    0.51      13.8 +/-    0.51  0.030 / 0.040