PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-17:12:30
G01     320.2          14.1                5.3 +/-    2.76      13.5 +/-    2.76  0.160 / 0.360
G08     262.6          15.2                8.4 +/-    1.32      20.7 +/-    1.32  0.180 / 0.320
G10     71.9           56.0                6.7 +/-    0.49       7.9 +/-    0.49  0.110 / 0.250
G11     308.1          19.7                7.4 +/-    3.04      16.5 +/-    3.04  0.170 / 0.300
G14     282.2          68.8                7.4 +/-    0.72       7.9 +/-    0.72  0.070 / 0.080
G18     98.9           30.1                7.9 +/-    0.64      13.7 +/-    0.64  0.050 / 0.080
G27     226.2          11.2                6.8 +/-    3.82      18.6 +/-    3.82  0.030 / 0.030
G31     177.4          36.8               11.0 +/-    1.90      16.9 +/-    1.90  0.030 / 0.030
G32     357.5          70.5                7.1 +/-    0.67       7.4 +/-    0.67  0.040 / 0.060