PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-07:27:50
G01     263.7          39.8                5.2 +/-    0.71       7.7 +/-    0.71  0.100 / 0.250
G03     316.1          31.6                3.5 +/-    1.85       5.9 +/-    1.85  0.140 / 0.270
G10     132.4          14.0                4.6 +/-    1.93      11.6 +/-    1.93  0.040 / 0.060
G11     243.1          18.7                5.0 +/-    2.01      11.4 +/-    2.01  0.030 / 0.050
G14     50.7           45.7                2.2 +/-    0.82       3.0 +/-    0.82  0.040 / 0.080
G22     312.9          57.6                2.5 +/-    1.50       3.0 +/-    1.50  0.040 / 0.090
G25     44.5           12.5                1.5 +/-    0.96       4.0 +/-    0.96  0.050 / 0.090
G26     145.7          28.5                6.1 +/-    1.66      11.0 +/-    1.66  0.080 / 0.100
G31     46.9           69.2                4.7 +/-    0.38       5.0 +/-    0.38  0.020 / 0.040
G32     68.0           30.0                4.0 +/-    0.71       7.0 +/-    0.71  0.020 / 0.030