PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-23:27:50
G01     121.0          16.6               10.6 +/-    2.94      25.5 +/-    2.94  0.080 / 0.070
G07     74.0           67.7               10.4 +/-    0.39      11.2 +/-    0.39  0.070 / 0.060
G08     46.9           35.8                7.7 +/-    1.28      12.1 +/-    1.28  0.160 / 0.280
G09     178.1          29.2               11.8 +/-    1.22      20.9 +/-    1.22  0.190 / 0.190
G11     113.5          38.8               10.9 +/-    0.68      16.2 +/-    0.68  0.040 / 0.050
G13     319.0          17.0                8.5 +/-    1.89      20.1 +/-    1.89  0.080 / 0.100
G17     201.9          20.7               10.1 +/-    2.04      21.8 +/-    2.04  0.180 / 0.250
G28     289.8          56.9                9.3 +/-    1.62      10.9 +/-    1.62  0.140 / 0.220
G30     352.3          69.5                8.9 +/-    0.85       9.5 +/-    0.85  0.050 / 0.090