PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-01:42:50
G03     238.7          68.0                4.6 +/-    0.65       4.9 +/-    0.65  0.050 / 0.050
G09     304.7          21.2                4.2 +/-    2.51       9.1 +/-    2.51  0.050 / 0.060
G14     99.1           16.7                4.6 +/-    1.19      11.1 +/-    1.19  0.040 / 0.060
G16     120.1          59.3                4.4 +/-    0.45       5.1 +/-    0.45  0.040 / 0.050
G22     197.7          55.0                5.9 +/-    0.98       7.0 +/-    0.98  0.110 / 0.470
G23     320.9          50.8                4.3 +/-    1.15       5.4 +/-    1.15  0.130 / 0.490
G26     66.9           50.4                2.2 +/-    0.51       2.8 +/-    0.51  0.040 / 0.030
G31     53.4           17.5                1.5 +/-    0.83       3.5 +/-    0.83  0.030 / 0.030