PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-20:42:30
G07     50.3           68.1               14.2 +/-    0.83      15.2 +/-    0.83  0.030 / 0.030
G08     54.0           42.1               12.6 +/-    0.71      17.7 +/-    0.71  0.030 / 0.040
G09     179.2          42.7               14.3 +/-    0.96      19.9 +/-    0.96  0.100 / 0.130
G11     122.0          32.9               14.7 +/-    0.75      24.4 +/-    0.75  0.130 / 0.200
G17     198.5          11.1               -1.9 +/-   26.12      -5.2 +/-   26.12  0.100 / 0.310
G18     105.5          14.0               13.0 +/-    2.76      33.1 +/-    2.76  0.110 / 0.360
G23     161.0          13.7               12.5 +/-    1.99      32.1 +/-    1.99  0.070 / 0.130
G27     38.8           13.4                9.9 +/-    2.51      25.5 +/-    2.51  0.070 / 0.120
G28     264.7          46.8               14.4 +/-    4.74      19.0 +/-    4.74  0.030 / 0.040
G30     327.4          56.7               14.0 +/-    0.57      16.4 +/-    0.57  0.040 / 0.040