PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/30-12:42:30
G02     37.1           52.2                4.8 +/-    1.26       5.9 +/-    1.26  0.030 / 0.030
G05     136.6          63.9                5.3 +/-    0.56       5.8 +/-    0.56  0.030 / 0.020
G06     54.0           18.0                1.4 +/-    3.71       3.3 +/-    3.71  0.030 / 0.030
G12     200.0          66.0                5.5 +/-    0.52       5.9 +/-    0.52  0.030 / 0.030
G20     199.6          27.1                6.1 +/-    2.17      11.4 +/-    2.17  0.180 / 0.170
G25     292.3          55.4                6.6 +/-    2.71       7.8 +/-    2.71  0.170 / 0.240
G29     311.6          34.1                2.9 +/-    1.17       4.7 +/-    1.17  0.160 / 0.260