PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-01:27:40
G02     17.9           67.3                7.7 +/-    0.46       8.2 +/-    0.46  0.030 / 0.030
G05     154.9          48.1               13.9 +/-    1.58      17.9 +/-    1.58  0.020 / 0.040
G06     46.4           27.9                8.5 +/-    1.79      15.6 +/-    1.79  0.030 / 0.070
G12     254.8          79.8               11.0 +/-    0.74      11.2 +/-    0.74  0.030 / 0.050
G19     86.7           20.2               11.4 +/-    1.31      25.0 +/-    1.31  0.250 / 0.430
G24     218.6          13.3               18.4 +/-    3.25      47.6 +/-    3.25  0.100 / 0.530
G25     312.8          40.4                9.2 +/-    2.72      13.2 +/-    2.72  0.050 / 0.040
G29     295.9          16.6                9.1 +/-    1.89      21.8 +/-    1.89  0.040 / 0.050