PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-13:43:10
G03     210.1          56.5                9.2 +/-    0.85      10.8 +/-    0.85  0.180 / 0.330
G07     257.6          15.4                6.8 +/-    2.79      16.8 +/-    2.79  0.170 / 0.460
G09     310.8          28.8                5.6 +/-    1.42      10.1 +/-    1.42  0.070 / 0.080
G14     109.0          9.3                 9.0 +/-    2.82      25.6 +/-    2.82  0.070 / 0.080
G16     89.3           63.8                9.3 +/-    0.84      10.2 +/-    0.84  0.090 / 0.220
G22     184.6          37.7                8.3 +/-    0.60      12.5 +/-    0.60  0.060 / 0.240
G23     337.1          64.5                7.9 +/-    0.44       8.6 +/-    0.44  0.040 / 0.040
G26     51.7           40.8                6.7 +/-    1.43       9.7 +/-    1.43  0.050 / 0.040
G27     133.2          11.4                9.7 +/-    4.53      26.4 +/-    4.53  0.030 / 0.030