PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-03:43:10
G02     201.0          30.8                7.2 +/-    1.79      12.5 +/-    1.79  0.020 / 0.050
G06     169.9          61.3                5.4 +/-    1.04       6.1 +/-    1.04  0.030 / 0.050
G17     28.9           54.7                2.4 +/-    0.70       2.9 +/-    0.70  0.040 / 0.040
G19     348.9          68.1                2.1 +/-    1.09       2.2 +/-    1.09  0.040 / 0.050
G24     304.3          34.4                1.1 +/-    1.80       1.8 +/-    1.80  0.050 / 0.150
G28     97.3           34.3                5.3 +/-    1.02       8.5 +/-    1.02  0.060 / 0.140