PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/15-21:43:10
G03     219.8          62.8               10.5 +/-    1.04      11.7 +/-    1.04  0.050 / 0.050
G07     252.6          11.5               -1.3 +/-   21.17      -3.5 +/-   21.17  0.050 / 0.060
G09     307.1          22.7               10.2 +/-    2.74      21.0 +/-    2.74  0.170 / 0.180
G14     105.3          10.2               11.4 +/-    2.33      31.6 +/-    2.33  0.150 / 0.220
G16     116.4          63.5               11.1 +/-    0.78      12.3 +/-    0.78  0.030 / 0.040
G22     190.8          48.0               12.0 +/-    0.60      15.6 +/-    0.60  0.030 / 0.040
G23     325.2          55.0                9.1 +/-    0.67      10.9 +/-    0.67  0.100 / 0.270
G26     60.1           48.2                8.1 +/-    0.62      10.4 +/-    0.62  0.110 / 0.270
G31     55.8           14.9                6.2 +/-    3.01      15.4 +/-    3.01  0.110 / 0.140