PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-17:58:00
G01     105.0          26.7               13.4 +/-    0.92      25.3 +/-    0.92  0.060 / 0.150
G07     109.8          57.1               13.6 +/-    0.35      15.9 +/-    0.35  0.080 / 0.140
G08     42.0           20.3                9.7 +/-    0.67      21.1 +/-    0.67  0.030 / 0.050
G09     174.4          11.8               14.1 +/-    1.79      37.8 +/-    1.79  0.030 / 0.060
G11     87.0           43.0               12.4 +/-    0.75      17.2 +/-    0.75  0.030 / 0.030
G13     308.0          29.8               13.9 +/-    1.71      24.5 +/-    1.71  0.030 / 0.040
G17     207.5          37.3               14.1 +/-    1.40      21.5 +/-    1.40  0.040 / 0.120
G18     78.4           24.6               11.7 +/-    0.62      23.0 +/-    0.62  0.040 / 0.100
G28     322.4          61.3               12.7 +/-    1.08      14.2 +/-    1.08  0.040 / 0.090
G30     37.1           79.0               13.1 +/-    0.70      13.3 +/-    0.70  0.050 / 0.090