PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/07-13:57:40
G10     251.7          29.6                5.7 +/-    1.96      10.1 +/-    1.96  0.040 / 0.040
G13     51.8           27.8                4.2 +/-    2.38       7.7 +/-    2.38  0.040 / 0.050
G15     78.5           55.1                6.6 +/-    1.20       7.8 +/-    1.20  0.040 / 0.040
G16     293.8          15.9                3.0 +/-    2.15       7.2 +/-    2.15  0.040 / 0.040
G20     275.0          54.4                5.6 +/-    2.66       6.7 +/-    2.66  0.130 / 0.360
G21     337.4          61.4                4.0 +/-    1.02       4.4 +/-    1.02  0.150 / 0.410
G26     267.6          14.9                2.6 +/-    2.30       6.6 +/-    2.30  0.090 / 0.170
G29     164.1          50.0                8.5 +/-    0.50      10.7 +/-    0.50  0.060 / 0.170