PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-03:27:40
G02     73.8           20.7                5.3 +/-    0.59      11.4 +/-    0.59  0.080 / 0.190
G05     45.4           43.4                6.0 +/-    0.63       8.3 +/-    0.63  0.070 / 0.190
G12     182.4          17.4                5.8 +/-    2.87      13.7 +/-    2.87  0.120 / 0.240
G13     111.9          26.2                8.5 +/-    0.73      16.2 +/-    0.73  0.070 / 0.150
G15     152.8          27.5               10.3 +/-    0.84      19.0 +/-    0.84  0.040 / 0.070
G20     227.1          12.5                9.5 +/-    3.80      25.2 +/-    3.80  0.030 / 0.060
G21     286.9          29.1                8.4 +/-    2.68      15.1 +/-    2.68  0.090 / 0.190
G25     216.7          37.4               10.4 +/-    1.10      15.8 +/-    1.10  0.080 / 0.210
G26     317.8          11.0               -3.7 +/-   32.36     -10.2 +/-   32.36  0.060 / 0.090
G29     352.5          75.7                9.9 +/-    0.99      10.2 +/-    0.99  0.060 / 0.110