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                5.5 +/-    0.72       9.7 +/-    0.72  0.040 / 0.050
G13     51.8           27.8                4.0 +/-    2.06       7.2 +/-    2.06  0.040 / 0.050
G15     78.5           55.1                6.8 +/-    0.59       8.0 +/-    0.59  0.040 / 0.050
G16     293.8          15.9                3.4 +/-    3.55       8.4 +/-    3.55  0.050 / 0.050
G20     275.0          54.4                7.5 +/-    0.66       9.0 +/-    0.66  0.140 / 0.720
G21     337.4          61.4                5.1 +/-    0.57       5.7 +/-    0.57  0.160 / 0.640
G26     267.6          14.9                4.7 +/-    1.61      11.8 +/-    1.61  0.090 / 0.110
G29     164.1          50.0                7.2 +/-    1.67       9.0 +/-    1.67  0.080 / 0.120