PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-20:57:50
G02     210.0          51.1               12.3 +/-    0.68      15.3 +/-    0.68  0.070 / 0.100
G06     90.2           78.8               10.6 +/-    0.42      10.8 +/-    0.42  0.110 / 0.090
G12     315.8          29.7                9.1 +/-    1.35      16.1 +/-    1.35  0.060 / 0.070
G17     48.7           39.7               10.3 +/-    1.55      15.1 +/-    1.55  0.060 / 0.070
G19     25.5           56.3               10.6 +/-    0.94      12.5 +/-    0.94  0.030 / 0.020
G24     276.7          42.6                8.8 +/-    1.92      12.3 +/-    1.92  0.030 / 0.030
G28     116.5          20.0               11.3 +/-    2.16      24.9 +/-    2.16  0.040 / 0.040