PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-03:58:10
G02     58.9           32.6                3.8 +/-    1.66       6.2 +/-    1.66  0.170 / 0.170
G05     59.6           61.1                5.5 +/-    0.51       6.2 +/-    0.51  0.100 / 0.240
G12     185.5          34.9                6.4 +/-    1.61      10.1 +/-    1.61  0.060 / 0.080
G13     130.0          13.9                5.4 +/-    3.30      13.7 +/-    3.30  0.110 / 0.070
G15     164.3          10.9               -4.7 +/-   12.15     -12.9 +/-   12.15  0.030 / 0.030
G20     215.8          26.6                6.4 +/-    2.14      12.0 +/-    2.14  0.040 / 0.030
G21     269.7          16.2                5.8 +/-    1.43      14.1 +/-    1.43  0.060 / 0.050
G25     241.3          53.2                6.3 +/-    3.22       7.7 +/-    3.22  0.060 / 0.080
G29     326.8          52.4                6.2 +/-    1.49       7.6 +/-    1.49  0.120 / 0.390