PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-19:58:10
G07     31.3           68.1               11.8 +/-    1.17      12.7 +/-    1.17  0.030 / 0.030
G08     61.6           46.7               11.6 +/-    1.86      15.2 +/-    1.86  0.020 / 0.030
G09     180.4          50.4               14.3 +/-    0.78      17.9 +/-    0.78  0.130 / 0.100
G11     128.5          28.5               14.2 +/-    2.58      25.6 +/-    2.58  0.150 / 0.110
G18     111.7          10.4                4.3 +/-   28.04      12.0 +/-   28.04  0.040 / 0.040
G23     160.5          20.3               11.0 +/-    1.83      24.0 +/-    1.83  0.040 / 0.050
G27     41.2           18.8                9.4 +/-    1.41      21.3 +/-    1.41  0.120 / 0.170
G28     256.2          42.1               13.3 +/-    2.82      18.7 +/-    2.82  0.190 / 0.140
G30     320.8          51.4               11.4 +/-    0.89      14.1 +/-    0.89  0.040 / 0.050