PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-20:58:00
G01     66.2           32.0               11.2 +/-    1.87      18.9 +/-    1.87  0.100 / 0.130
G07     138.9          22.1               13.2 +/-    1.80      27.6 +/-    1.80  0.080 / 0.150
G11     50.4           27.4                8.2 +/-    1.90      15.2 +/-    1.90  0.110 / 0.120
G13     269.0          37.7               11.3 +/-    4.12      17.1 +/-    4.12  0.060 / 0.090
G15     298.6          16.2               11.0 +/-    2.07      26.7 +/-    2.07  0.040 / 0.050
G17     240.4          73.2               12.7 +/-    0.30      13.2 +/-    0.30  0.050 / 0.050
G18     44.6           14.8                8.8 +/-    2.22      22.0 +/-    2.22  0.030 / 0.040
G19     226.3          45.5               13.3 +/-    2.35      17.8 +/-    2.35  0.030 / 0.040
G28     17.7           60.0               10.6 +/-    0.79      12.0 +/-    0.79  0.100 / 0.120
G30     139.0          56.9               12.6 +/-    0.60      14.8 +/-    0.60  0.060 / 0.130