PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/20-23:58:00
G01     57.3           29.5               10.2 +/-    2.07      18.1 +/-    2.07  0.080 / 0.090
G06     180.0          17.0               12.5 +/-    1.81      29.7 +/-    1.81  0.080 / 0.090
G07     143.5          20.1               10.9 +/-    1.85      23.8 +/-    1.85  0.020 / 0.030
G11     48.1           23.7                7.8 +/-    1.31      15.8 +/-    1.31  0.030 / 0.020
G13     259.9          34.1               11.9 +/-    1.01      19.2 +/-    1.01  0.200 / 0.360
G15     290.7          16.6               10.0 +/-    1.98      23.8 +/-    1.98  0.150 / 0.280
G17     262.6          75.1               11.3 +/-    0.57      11.6 +/-    0.57  0.050 / 0.050
G19     235.9          53.0               12.5 +/-    1.77      15.2 +/-    1.77  0.040 / 0.050
G28     41.2           55.5                8.0 +/-    0.93       9.5 +/-    0.93  0.110 / 0.180
G30     144.8          46.4               12.2 +/-    0.74      16.1 +/-    0.74  0.130 / 0.190