PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-12:57:50
G02     235.3          72.6                4.4 +/-    0.58       4.6 +/-    0.58  0.080 / 0.090
G05     174.6          12.1                2.3 +/-    2.44       6.2 +/-    2.44  0.060 / 0.080
G06     41.3           59.9                3.9 +/-    0.41       4.4 +/-    0.41  0.040 / 0.040
G12     321.5          50.6                3.4 +/-    0.88       4.3 +/-    0.88  0.050 / 0.040
G17     67.5           25.0                5.3 +/-    1.64      10.3 +/-    1.64  0.040 / 0.030
G19     55.4           38.4                3.8 +/-    1.20       5.7 +/-    1.20  0.040 / 0.030
G24     249.8          36.0                6.3 +/-    2.18       9.9 +/-    2.18  0.060 / 0.060