PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-08:43:10
G01     222.4          13.4                3.9 +/-    3.77      10.1 +/-    3.77  0.200 / 0.330
G03     277.9          68.0                4.2 +/-    0.79       4.5 +/-    0.79  0.350 / 0.250
G09     297.9          12.8                3.8 +/-    3.06      10.1 +/-    3.06  0.170 / 0.300
G14     92.0           19.4                4.0 +/-    1.66       8.9 +/-    1.66  0.130 / 0.560
G16     143.4          49.9                6.1 +/-    0.60       7.7 +/-    0.60  0.090 / 0.080
G22     203.5          66.0                5.4 +/-    0.67       5.8 +/-    0.67  0.050 / 0.090
G23     310.3          39.8                4.0 +/-    1.34       5.8 +/-    1.34  0.030 / 0.030
G26     90.0           55.1                5.9 +/-    0.54       7.0 +/-    0.54  0.030 / 0.030
G31     47.0           28.1                3.5 +/-    1.72       6.4 +/-    1.72  0.040 / 0.050