PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/15-10:12:30
G10     252.8          29.3                5.0 +/-    2.02       8.9 +/-    2.02  0.110 / 0.180
G13     51.1           27.9                3.1 +/-    2.95       5.7 +/-    2.95  0.110 / 0.250
G15     80.5           56.6                5.1 +/-    0.91       6.0 +/-    0.91  0.050 / 0.040
G16     297.5          14.0                2.4 +/-    1.71       6.0 +/-    1.71  0.050 / 0.030
G20     273.7          52.7                4.4 +/-    3.68       5.4 +/-    3.68  0.040 / 0.040
G21     346.5          65.1                5.6 +/-    0.70       6.1 +/-    0.70  0.030 / 0.030
G29     162.5          43.1                6.8 +/-    1.18       9.4 +/-    1.18  0.100 / 0.300