PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-18:58:00
G07     336.3          59.1               14.5 +/-    0.44      16.6 +/-    0.44  0.040 / 0.040
G08     101.6          53.6               17.6 +/-    0.76      21.3 +/-    0.76  0.100 / 0.040
G09     190.1          71.3               16.8 +/-    0.84      17.7 +/-    0.84  0.060 / 0.090
G11     145.6          14.3               21.0 +/-    2.35      53.0 +/-    2.35  0.060 / 0.100
G23     155.1          34.9               17.5 +/-    1.53      27.9 +/-    1.53  0.090 / 0.070
G27     52.1           29.8               14.7 +/-    1.32      25.8 +/-    1.32  0.090 / 0.090
G28     239.8          32.2               19.1 +/-    2.86      32.0 +/-    2.86  0.030 / 0.050
G30     305.5          38.7               13.6 +/-    1.84      20.2 +/-    1.84  0.110 / 0.060