PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-21:27:50
G01     90.6           31.3               13.2 +/-    1.18      22.4 +/-    1.18  0.060 / 0.060
G07     125.6          40.8               14.5 +/-    0.90      20.8 +/-    0.90  0.050 / 0.060
G11     67.7           39.6               12.3 +/-    1.40      18.0 +/-    1.40  0.070 / 0.120
G13     294.9          36.5               12.6 +/-    4.59      19.4 +/-    4.59  0.080 / 0.100
G17     212.8          54.3               17.9 +/-    0.63      21.5 +/-    0.63  0.070 / 0.040
G18     61.8           22.7               11.4 +/-    2.14      23.5 +/-    2.14  0.050 / 0.040
G19     213.7          26.3               17.3 +/-    1.31      32.8 +/-    1.31  0.090 / 0.190
G28     338.9          61.6               12.3 +/-    0.58      13.8 +/-    0.58  0.100 / 0.170
G30     103.5          75.9               15.0 +/-    0.35      15.4 +/-    0.35  0.020 / 0.020