PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-02:42:50
G02     66.6           26.4                9.1 +/-    1.46      17.2 +/-    1.46  0.110 / 0.160
G05     49.1           52.2                7.5 +/-    0.33       9.3 +/-    0.33  0.080 / 0.210
G12     184.4          26.3                8.7 +/-    0.65      16.4 +/-    0.65  0.070 / 0.090
G13     120.2          20.5               11.2 +/-    0.82      24.3 +/-    0.82  0.060 / 0.090
G15     158.2          19.7                9.4 +/-    2.26      20.8 +/-    2.26  0.060 / 0.110
G21     279.0          23.4               11.2 +/-    1.14      22.7 +/-    1.14  0.050 / 0.140
G25     225.2          45.5                9.7 +/-    1.43      13.0 +/-    1.43  0.030 / 0.040
G29     339.7          66.3                9.4 +/-    0.82      10.2 +/-    0.82  0.030 / 0.040