PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-23:12:30
G02     220.1          65.4               14.4 +/-    0.88      15.7 +/-    0.88  0.040 / 0.060
G06     49.1           69.8               12.1 +/-    0.35      12.9 +/-    0.35  0.030 / 0.080
G12     320.0          40.5               11.6 +/-    0.89      16.8 +/-    0.89  0.050 / 0.040
G17     59.1           32.5               11.4 +/-    0.75      19.0 +/-    0.75  0.040 / 0.050
G19     43.0           47.4               11.7 +/-    0.33      15.2 +/-    0.33  0.140 / 0.430
G24     259.4          40.4               15.6 +/-    0.97      22.5 +/-    0.97  0.190 / 0.490
G28     125.6          10.1               15.5 +/-    3.04      43.2 +/-    3.04  0.060 / 0.090