PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/07-21:57:40
G07     14.1           68.0               10.8 +/-    0.64      11.6 +/-    0.64  0.080 / 0.110
G08     66.7           50.7               11.5 +/-    1.18      14.3 +/-    1.18  0.120 / 0.110
G09     181.0          50.9               13.7 +/-    0.81      17.1 +/-    0.81  0.130 / 0.140
G11     133.4          26.4               11.5 +/-    1.83      21.7 +/-    1.83  0.090 / 0.150
G23     159.3          17.8               13.3 +/-    1.17      30.9 +/-    1.17  0.050 / 0.040
G27     40.3           16.7                8.7 +/-    1.89      20.7 +/-    1.89  0.040 / 0.040
G28     259.2          45.9               12.0 +/-    2.41      16.0 +/-    2.41  0.030 / 0.030
G30     323.6          53.3                9.3 +/-    0.81      11.3 +/-    0.81  0.030 / 0.030