PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-09:12:30
G02     208.8          52.1                7.5 +/-    0.36       9.2 +/-    0.36  0.080 / 0.210
G06     134.6          80.6                5.4 +/-    0.46       5.5 +/-    0.46  0.080 / 0.190
G12     314.8          26.3                3.4 +/-    2.04       6.5 +/-    2.04  0.060 / 0.060
G17     50.5           37.5                3.0 +/-    1.50       4.6 +/-    1.50  0.040 / 0.040
G19     29.6           54.4                3.5 +/-    1.31       4.3 +/-    1.31  0.110 / 0.130
G24     280.3          41.9                5.9 +/-    1.10       8.4 +/-    1.10  0.120 / 0.130
G28     116.3          19.8                5.0 +/-    1.18      11.0 +/-    1.18  0.020 / 0.020