PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-07:57:20
G02     39.8           49.7                2.7 +/-    1.34       3.5 +/-    1.34  0.030 / 0.020
G05     125.9          66.0                6.2 +/-    0.53       6.7 +/-    0.53  0.030 / 0.030
G06     55.9           14.6                3.1 +/-    2.54       7.8 +/-    2.54  0.100 / 0.180
G12     197.3          63.4                4.3 +/-    0.68       4.7 +/-    0.68  0.120 / 0.170
G20     201.3          26.8                4.9 +/-    1.78       9.2 +/-    1.78  0.040 / 0.030
G25     289.7          55.6                1.8 +/-    1.98       2.1 +/-    1.98  0.030 / 0.040
G29     311.7          33.2                1.2 +/-    1.13       2.0 +/-    1.13  0.220 / 0.220