PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-20:12:50
G01     83.5           33.0               12.8 +/-    1.08      21.1 +/-    1.08  0.110 / 0.310
G07     130.3          41.0               13.7 +/-    0.79      19.6 +/-    0.79  0.110 / 0.270
G11     63.8           38.1               10.7 +/-    0.79      16.0 +/-    0.79  0.060 / 0.100
G13     288.1          37.2               11.8 +/-    1.84      17.9 +/-    1.84  0.050 / 0.110
G15     311.4          12.2                9.0 +/-    1.54      24.0 +/-    1.54  0.030 / 0.080
G17     219.7          55.0               15.3 +/-    0.99      18.3 +/-    0.99  0.030 / 0.090
G18     58.7           22.7               10.4 +/-    1.14      21.4 +/-    1.14  0.050 / 0.040
G19     217.5          31.2               15.0 +/-    2.47      25.7 +/-    2.47  0.040 / 0.050
G28     0.8            61.2               11.7 +/-    1.01      13.2 +/-    1.01  0.050 / 0.090
G30     120.3          70.2               12.8 +/-    0.73      13.6 +/-    0.73  0.050 / 0.090