PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-19:27:50
G01     234.7          24.6                9.8 +/-    1.79      19.4 +/-    1.79  0.040 / 0.030
G03     304.6          61.8                7.9 +/-    0.78       8.8 +/-    0.78  0.030 / 0.030
G14     76.5           31.5                8.4 +/-    0.99      14.2 +/-    0.99  0.070 / 0.140
G16     155.8          33.8                4.4 +/-    0.80       7.2 +/-    0.80  0.080 / 0.130
G22     252.1          76.0                8.8 +/-    0.43       9.0 +/-    0.43  0.090 / 0.140
G23     299.7          30.6                9.5 +/-    0.85      16.5 +/-    0.85  0.080 / 0.110
G26     116.1          50.3               10.9 +/-    1.10      13.6 +/-    1.10  0.060 / 0.070
G31     41.8           41.8                6.2 +/-    0.79       8.7 +/-    0.79  0.060 / 0.060
G32     91.4           12.3                9.5 +/-    1.71      25.1 +/-    1.71  0.140 / 0.210