PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-15:57:30
G03     220.2          64.5               11.3 +/-    0.87      12.4 +/-    0.87  0.140 / 0.470
G09     305.6          20.6                9.5 +/-    1.22      20.6 +/-    1.22  0.180 / 0.480
G14     102.2          14.4               10.3 +/-    1.98      26.0 +/-    1.98  0.040 / 0.060
G16     115.8          61.9               11.3 +/-    0.69      12.6 +/-    0.69  0.050 / 0.060
G22     187.7          47.9               11.7 +/-    1.20      15.1 +/-    1.20  0.040 / 0.050
G23     326.3          55.8                9.9 +/-    0.56      11.7 +/-    0.56  0.040 / 0.040
G26     61.6           48.1                9.9 +/-    0.85      12.8 +/-    0.85  0.030 / 0.040
G31     55.0           14.9                8.1 +/-    3.58      20.1 +/-    3.58  0.040 / 0.040