PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-20:58:00
G01     52.0           26.8               12.1 +/-    2.59      22.6 +/-    2.59  0.070 / 0.180
G06     177.8          23.4               15.3 +/-    1.92      31.0 +/-    1.92  0.130 / 0.160
G07     145.6          15.0               17.5 +/-    3.23      43.5 +/-    3.23  0.180 / 0.370
G11     45.6           18.0               11.6 +/-    2.25      26.9 +/-    2.25  0.150 / 0.410
G13     253.2          31.5               12.7 +/-    2.97      21.5 +/-    2.97  0.050 / 0.060
G15     286.1          15.9               12.3 +/-    1.01      30.0 +/-    1.01  0.060 / 0.060
G17     284.7          77.0               13.1 +/-    0.35      13.4 +/-    0.35  0.120 / 0.150
G19     242.7          56.8               13.1 +/-    1.96      15.3 +/-    1.96  0.110 / 0.110
G28     49.5           53.6               14.2 +/-    0.93      17.2 +/-    0.93  0.030 / 0.040
G30     148.4          42.5               14.5 +/-    0.83      20.2 +/-    0.83  0.040 / 0.070