PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-06:57:40
G10     260.4          35.0                6.9 +/-    2.54      11.0 +/-    2.54  0.040 / 0.040
G13     45.2           22.4                4.7 +/-    2.17       9.8 +/-    2.17  0.040 / 0.030
G15     66.1           52.2                5.7 +/-    1.66       7.0 +/-    1.66  0.060 / 0.070
G16     289.9          13.2                2.5 +/-    1.20       6.6 +/-    1.20  0.080 / 0.120
G20     286.4          57.3                6.2 +/-    1.61       7.2 +/-    1.61  0.150 / 0.300
G21     355.3          68.7                6.1 +/-    0.41       6.5 +/-    0.41  0.130 / 0.320
G24     124.6          10.6               -0.9 +/-   24.01      -2.4 +/-   24.01  0.210 / 0.280
G26     261.8          10.9                3.5 +/-    2.57       9.5 +/-    2.57  0.220 / 0.190
G27     321.7          12.1                0.5 +/-   10.61       1.3 +/-   10.61  0.120 / 0.200
G29     164.0          33.6                8.6 +/-    1.43      14.0 +/-    1.43  0.100 / 0.230