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                9.4 +/-    0.86      10.5 +/-    0.86  0.040 / 0.070
G07     252.6          11.5                8.7 +/-   14.29      23.5 +/-   14.29  0.040 / 0.080
G09     307.1          22.7                7.3 +/-    1.67      15.1 +/-    1.67  0.090 / 0.350
G14     105.3          10.2                9.1 +/-    4.33      25.3 +/-    4.33  0.090 / 0.470
G16     116.4          63.5               11.6 +/-    0.58      12.8 +/-    0.58  0.110 / 0.380
G22     190.8          48.0               11.6 +/-    1.68      15.0 +/-    1.68  0.140 / 0.330
G23     325.2          55.0                9.6 +/-    0.60      11.5 +/-    0.60  0.040 / 0.050
G26     60.1           48.2                7.3 +/-    0.74       9.4 +/-    0.74  0.040 / 0.040
G31     55.8           14.9                6.5 +/-    1.11      16.2 +/-    1.11  0.100 / 0.480