PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/06-14:27:50
G02     82.9           13.1                5.8 +/-    3.17      15.1 +/-    3.17  0.100 / 0.050
G05     44.6           35.1                4.7 +/-    0.84       7.5 +/-    0.84  0.070 / 0.050
G13     102.9          32.6                5.9 +/-    1.24       9.8 +/-    1.24  0.040 / 0.030
G15     144.8          36.7                9.1 +/-    0.85      14.1 +/-    0.85  0.040 / 0.030
G18     230.2          27.3                4.6 +/-    2.41       8.5 +/-    2.41  0.250 / 0.360
G20     295.7          84.7                5.7 +/-    0.73       5.7 +/-    0.73  0.160 / 0.290
G21     297.9          38.6                3.7 +/-    1.67       5.6 +/-    1.67  0.050 / 0.080
G25     210.0          27.4                7.5 +/-    2.09      14.0 +/-    2.09  0.070 / 0.110
G26     309.6          16.2                2.2 +/-    2.02       5.2 +/-    2.02  0.110 / 0.130
G29     57.2           85.5                4.4 +/-    0.48       4.4 +/-    0.48  0.120 / 0.140