PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-21:43:00
G01     101.1          28.4               13.6 +/-    1.25      24.6 +/-    1.25  0.180 / 0.230
G07     114.9          54.2               13.4 +/-    0.58      16.1 +/-    0.58  0.080 / 0.120
G08     42.1           19.5                9.8 +/-    1.08      21.9 +/-    1.08  0.070 / 0.090
G11     83.6           43.3               13.4 +/-    1.61      18.5 +/-    1.61  0.060 / 0.100
G13     305.0          31.6               10.6 +/-    0.82      17.9 +/-    0.82  0.030 / 0.050
G17     209.6          40.0               13.6 +/-    1.24      19.8 +/-    1.24  0.030 / 0.040
G18     74.6           24.9               12.7 +/-    1.25      24.9 +/-    1.25  0.030 / 0.020
G19     210.9          17.8                4.0 +/-   20.20       9.3 +/-   20.20  0.030 / 0.030
G28     330.8          61.7               10.2 +/-    0.45      11.5 +/-    0.45  0.070 / 0.150
G30     68.3           78.6               10.8 +/-    0.79      11.0 +/-    0.79  0.080 / 0.140