PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-14:57:50
G10     270.5          40.6                6.4 +/-    1.62       9.2 +/-    1.62  0.040 / 0.040
G13     40.5           15.6                4.7 +/-    3.36      11.5 +/-    3.36  0.040 / 0.040
G15     56.8           47.5                4.2 +/-    0.52       5.5 +/-    0.52  0.060 / 0.090
G16     278.0          11.0                4.2 +/-    1.81      11.6 +/-    1.81  0.050 / 0.080
G20     303.9          61.6                5.2 +/-    0.72       5.9 +/-    0.72  0.140 / 0.420
G21     23.6           74.3                5.0 +/-    0.89       5.2 +/-    0.89  0.130 / 0.410
G24     113.7          16.4                7.9 +/-    1.27      19.1 +/-    1.27  0.090 / 0.220
G27     318.4          19.0                4.4 +/-    2.05       9.9 +/-    2.05  0.080 / 0.250
G29     167.1          26.6                6.1 +/-    1.32      11.6 +/-    1.32  0.110 / 0.170
G32     205.0          11.0               -5.3 +/-   35.12     -14.4 +/-   35.12  0.100 / 0.230