PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-21:42:40
G02     199.9          20.0               19.4 +/-    2.28      42.7 +/-    2.28  0.090 / 0.200
G06     170.6          52.8               15.1 +/-    1.20      18.4 +/-    1.20  0.100 / 0.160
G13     228.5          14.1               19.9 +/-    5.35      50.7 +/-    5.35  0.040 / 0.080
G17     14.2           63.6               12.1 +/-    1.31      13.3 +/-    1.31  0.040 / 0.090
G19     313.2          70.9               12.1 +/-    0.55      12.7 +/-    0.55  0.090 / 0.150
G24     310.9          28.6               11.5 +/-    0.87      20.8 +/-    0.87  0.070 / 0.180
G28     86.5           40.4               13.3 +/-    1.11      19.3 +/-    1.11  0.100 / 0.290
G30     156.7          15.2               17.3 +/-    2.28      42.9 +/-    2.28  0.110 / 0.340