PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-19:12:50
G01     120.5          16.2               13.0 +/-    2.30      31.3 +/-    2.30  0.030 / 0.030
G07     85.0           62.8               12.4 +/-    0.70      13.8 +/-    0.70  0.030 / 0.040
G08     45.6           32.5                9.4 +/-    1.49      15.7 +/-    1.49  0.110 / 0.100
G09     177.9          29.5               13.3 +/-    0.79      23.5 +/-    0.79  0.080 / 0.090
G11     107.8          39.7               12.5 +/-    0.85      18.3 +/-    0.85  0.150 / 0.210
G13     318.3          18.5                9.0 +/-    1.35      20.5 +/-    1.35  0.140 / 0.230
G17     200.4          23.0               12.5 +/-    3.30      25.6 +/-    3.30  0.030 / 0.030
G18     94.0           19.8               11.2 +/-    1.84      24.8 +/-    1.84  0.030 / 0.020
G28     282.7          53.5               13.4 +/-    2.67      16.3 +/-    2.67  0.100 / 0.110
G30     345.5          68.0               12.4 +/-    0.61      13.2 +/-    0.61  0.080 / 0.120