PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-07:58:00
G01     220.2          11.2                5.0 +/-    1.91      13.6 +/-    1.91  0.120 / 0.310
G03     268.5          68.7                2.9 +/-    1.44       3.1 +/-    1.44  0.180 / 0.210
G09     300.1          15.6                2.0 +/-    2.82       5.0 +/-    2.82  0.060 / 0.100
G14     94.6           17.4                3.6 +/-    2.07       8.3 +/-    2.07  0.070 / 0.080
G16     140.5          52.8                5.6 +/-    0.66       6.8 +/-    0.66  0.030 / 0.040
G22     200.5          63.1                4.5 +/-    0.70       5.0 +/-    0.70  0.030 / 0.030
G23     312.6          42.0                4.5 +/-    1.32       6.3 +/-    1.32  0.170 / 0.280
G26     84.5           55.2                5.4 +/-    1.18       6.4 +/-    1.18  0.180 / 0.380
G31     48.3           25.9                1.3 +/-    2.55       2.4 +/-    2.55  0.150 / 0.220