PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-05:27:50
G01     301.0          36.7                6.1 +/-    1.94       9.5 +/-    1.94  0.030 / 0.040
G10     111.7          36.7                5.7 +/-    0.91       8.8 +/-    0.91  0.030 / 0.040
G11     272.4          29.3                5.3 +/-    1.41       9.4 +/-    1.41  0.100 / 0.100
G14     12.9           62.9                3.8 +/-    0.66       4.2 +/-    0.66  0.070 / 0.100
G18     120.6          11.3                4.2 +/-    1.93      11.3 +/-    1.93  0.070 / 0.080
G22     311.6          31.3                4.3 +/-    0.95       7.4 +/-    0.95  0.050 / 0.090
G25     71.2           16.8                4.6 +/-    1.96      11.0 +/-    1.96  0.050 / 0.050
G31     160.0          71.3                7.2 +/-    0.34       7.6 +/-    0.34  0.040 / 0.060
G32     41.2           49.2                4.4 +/-    1.51       5.6 +/-    1.51  0.040 / 0.040