PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-17:57:40
G07     52.5           67.5               10.2 +/-    0.35      10.9 +/-    0.35  0.070 / 0.100
G08     55.2           43.4                9.9 +/-    0.31      13.7 +/-    0.31  0.050 / 0.100
G09     179.7          43.8               14.2 +/-    2.20      19.5 +/-    2.20  0.030 / 0.030
G11     123.0          32.6               13.5 +/-    0.83      22.5 +/-    0.83  0.040 / 0.030
G18     106.9          13.7               12.6 +/-    0.97      32.2 +/-    0.97  0.040 / 0.050
G23     160.5          13.2               13.1 +/-    2.67      33.9 +/-    2.67  0.040 / 0.040
G27     38.7           13.4                8.0 +/-    1.67      20.8 +/-    1.67  0.080 / 0.140
G28     263.4          45.8               12.5 +/-    0.92      16.7 +/-    0.92  0.090 / 0.170
G30     328.4          57.3               10.6 +/-    0.76      12.4 +/-    0.76  0.130 / 0.360