PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-11:13:00
G01     110.1          23.7                3.2 +/-    1.92       6.4 +/-    1.92  0.070 / 0.080
G07     102.9          58.3                5.2 +/-    0.36       6.0 +/-    0.36  0.070 / 0.080
G08     42.1           21.4                2.9 +/-    1.07       6.2 +/-    1.07  0.030 / 0.030
G09     174.0          14.9                6.7 +/-    1.71      16.7 +/-    1.71  0.030 / 0.030
G11     91.5           40.9                4.3 +/-    0.53       6.1 +/-    0.53  0.100 / 0.260
G13     313.5          24.6                5.0 +/-    2.85       9.8 +/-    2.85  0.100 / 0.300
G17     203.9          36.9                5.5 +/-    1.94       8.4 +/-    1.94  0.090 / 0.200
G19     208.0          11.5                2.0 +/-   10.49       5.3 +/-   10.49  0.070 / 0.190
G28     312.1          60.3                3.3 +/-    0.93       3.7 +/-    0.93  0.030 / 0.040
G30     5.0            75.0                4.6 +/-    0.67       4.7 +/-    0.67  0.040 / 0.070