PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-03:58:00
G05     47.4           19.9                4.7 +/-    0.93      10.4 +/-    0.93  0.110 / 0.510
G13     83.0           36.5                8.2 +/-    0.96      12.6 +/-    0.96  0.140 / 0.440
G15     131.7          48.6                9.8 +/-    0.79      12.6 +/-    0.79  0.060 / 0.150
G16     317.9          10.8                2.0 +/-   18.92       5.5 +/-   18.92  0.070 / 0.160
G20     250.1          52.9               13.1 +/-    0.78      16.0 +/-    0.78  0.040 / 0.080
G21     307.9          43.3                8.8 +/-    1.12      12.2 +/-    1.12  0.040 / 0.070
G25     202.7          15.4               11.3 +/-    2.31      27.9 +/-    2.31  0.170 / 0.260
G26     291.6          21.1               10.7 +/-    1.85      23.1 +/-    1.85  0.180 / 0.260
G29     150.1          79.2                8.9 +/-    0.94       9.1 +/-    0.94  0.060 / 0.120