PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-11:43:00
G02     36.3           53.0                3.5 +/-    0.68       4.2 +/-    0.68  0.020 / 0.030
G05     137.7          63.1                6.1 +/-    1.02       6.8 +/-    1.02  0.030 / 0.030
G06     53.0           19.7                1.4 +/-    0.73       3.2 +/-    0.73  0.030 / 0.040
G12     201.7          67.4                3.0 +/-    0.56       3.2 +/-    0.56  0.030 / 0.040
G20     199.7          25.4                4.2 +/-    1.56       8.1 +/-    1.56  0.130 / 0.240
G25     294.7          54.5                3.8 +/-    0.83       4.5 +/-    0.83  0.080 / 0.240
G29     310.4          32.6                2.1 +/-    0.83       3.6 +/-    0.83  0.050 / 0.040