PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-20:42:50
G07     39.5           68.3               12.2 +/-    0.82      13.0 +/-    0.82  0.040 / 0.030
G08     57.6           44.6               11.9 +/-    1.07      16.1 +/-    1.07  0.040 / 0.030
G09     179.7          46.7               14.1 +/-    1.27      18.6 +/-    1.27  0.110 / 0.180
G11     125.5          30.6               15.6 +/-    1.59      27.0 +/-    1.59  0.150 / 0.180
G18     108.7          12.1               14.9 +/-    2.34      39.8 +/-    2.34  0.100 / 0.150
G23     160.9          17.3               13.8 +/-    1.52      32.5 +/-    1.52  0.070 / 0.130
G27     40.0           16.4                9.1 +/-    3.24      22.0 +/-    3.24  0.070 / 0.050
G28     260.1          44.4               13.5 +/-    4.23      18.3 +/-    4.23  0.070 / 0.050
G30     323.6          53.7               12.1 +/-    0.39      14.6 +/-    0.39  0.130 / 0.330