PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-12:27:50
G10     90.1           49.2                4.6 +/-    1.02       5.9 +/-    1.02  0.040 / 0.050
G11     298.3          24.5                3.3 +/-    2.18       6.5 +/-    2.18  0.040 / 0.050
G14     310.9          70.1                4.7 +/-    0.70       5.0 +/-    0.70  0.160 / 0.260
G18     297.8          44.1                3.9 +/-    7.04       5.3 +/-    7.04  0.140 / 0.250
G22     305.1          19.2                3.1 +/-    1.54       7.0 +/-    1.54  0.090 / 0.150
G25     95.7           11.7                5.8 +/-    1.63      15.6 +/-    1.63  0.100 / 0.170
G31     172.2          51.6                8.1 +/-    0.75      10.0 +/-    0.75  0.080 / 0.160
G32     22.0           61.2                4.7 +/-    0.61       5.3 +/-    0.61  0.080 / 0.150