PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-11:12:30
G01     110.1          23.7                4.5 +/-    0.86       9.0 +/-    0.86  0.080 / 0.130
G07     102.9          58.3                6.0 +/-    0.50       6.9 +/-    0.50  0.120 / 0.180
G08     42.1           21.4                2.5 +/-    2.30       5.4 +/-    2.30  0.020 / 0.020
G09     174.0          14.9                4.5 +/-    1.91      11.2 +/-    1.91  0.030 / 0.020
G11     91.5           40.9                5.7 +/-    0.56       8.2 +/-    0.56  0.080 / 0.090
G13     313.5          24.6                1.3 +/-    1.81       2.6 +/-    1.81  0.090 / 0.080
G17     203.9          36.9                6.7 +/-    0.97      10.3 +/-    0.97  0.140 / 0.270
G19     208.0          11.5               -1.2 +/-    4.63      -3.3 +/-    4.63  0.150 / 0.190
G28     312.1          60.3                2.6 +/-    0.98       3.0 +/-    0.98  0.040 / 0.030
G30     5.0            75.0                4.9 +/-    0.44       5.1 +/-    0.44  0.030 / 0.030