PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-05:27:30
G02     61.6           30.2                4.0 +/-    0.79       7.0 +/-    0.79  0.100 / 0.100
G05     55.4           58.4                5.0 +/-    0.43       5.8 +/-    0.43  0.040 / 0.090
G12     185.3          31.9                6.7 +/-    1.84      11.3 +/-    1.84  0.070 / 0.090
G13     127.7          16.0                6.6 +/-    1.75      16.0 +/-    1.75  0.080 / 0.080
G15     162.3          13.5                5.0 +/-    1.72      12.9 +/-    1.72  0.020 / 0.040
G20     215.4          40.6                7.6 +/-    1.61      11.0 +/-    1.61  0.030 / 0.040
G21     272.5          18.6                4.6 +/-    2.09      10.4 +/-    2.09  0.110 / 0.250
G25     236.6          51.1                6.6 +/-    1.04       8.3 +/-    1.04  0.100 / 0.310
G29     329.2          55.9                3.3 +/-    0.66       3.9 +/-    0.66  0.080 / 0.120