PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-23:57:40
G01     38.5           11.7               10.6 +/-    5.20      28.5 +/-    5.20  0.470 / 0.290
G02     199.0          15.3               17.3 +/-    3.17      42.7 +/-    3.17  0.360 / 0.360
G06     173.7          45.9               14.0 +/-    0.53      18.6 +/-    0.53  0.160 / 0.170
G13     233.0          17.8               13.1 +/-    1.86      30.5 +/-    1.86  0.150 / 0.250
G17     3.9            68.1               10.4 +/-    0.55      11.1 +/-    0.55  0.050 / 0.050
G19     296.6          70.8               11.3 +/-    0.55      11.9 +/-    0.55  0.050 / 0.050
G24     314.2          24.0                8.8 +/-    1.38      17.6 +/-    1.38  0.090 / 0.150
G28     80.1           43.3               10.9 +/-    1.20      15.1 +/-    1.20  0.110 / 0.120
G30     155.4          19.3               12.7 +/-    2.96      28.5 +/-    2.96  0.050 / 0.080