PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-05:12:40
G01     226.5          18.8                6.2 +/-    1.72      14.0 +/-    1.72  0.040 / 0.040
G03     294.2          66.2                4.7 +/-    0.67       5.1 +/-    0.67  0.030 / 0.040
G14     83.1           27.1                3.4 +/-    1.53       6.3 +/-    1.53  0.080 / 0.130
G16     147.3          42.3                5.3 +/-    0.79       7.5 +/-    0.79  0.090 / 0.150
G22     227.6          72.4                4.9 +/-    0.18       5.1 +/-    0.18  0.220 / 0.580
G23     307.2          38.3                3.5 +/-    2.26       5.2 +/-    2.26  0.230 / 0.330
G26     101.8          53.5                5.2 +/-    1.42       6.3 +/-    1.42  0.060 / 0.100
G31     45.0           32.8               -3.3 +/-    1.26      -5.5 +/-    1.26  0.050 / 0.090