PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-02:57:50
G01     300.5          36.9                6.5 +/-    1.72      10.0 +/-    1.72  0.040 / 0.040
G10     112.3          36.1                8.1 +/-    0.89      12.5 +/-    0.89  0.040 / 0.050
G11     272.5          28.9                6.5 +/-    0.63      11.6 +/-    0.63  0.060 / 0.070
G14     13.6           62.7                7.2 +/-    0.93       8.0 +/-    0.93  0.050 / 0.080
G18     121.2          9.9                 7.1 +/-    1.80      19.9 +/-    1.80  0.030 / 0.030
G22     311.6          30.8                7.6 +/-    0.91      13.0 +/-    0.91  0.030 / 0.030
G25     72.2           17.4                8.4 +/-    1.09      19.8 +/-    1.09  0.090 / 0.100
G31     163.7          70.8                8.6 +/-    0.50       9.1 +/-    0.50  0.060 / 0.100
G32     40.4           49.9                5.4 +/-    1.29       6.8 +/-    1.29  0.050 / 0.120