PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-07:12:30
G10     246.6          24.4                7.7 +/-    1.05      15.3 +/-    1.05  0.040 / 0.040
G13     57.8           31.6                5.9 +/-    1.21      10.0 +/-    1.21  0.030 / 0.030
G15     94.1           57.4                8.2 +/-    1.23       9.5 +/-    1.23  0.060 / 0.130
G16     305.3          13.4                3.6 +/-    1.32       9.4 +/-    1.32  0.090 / 0.120
G20     264.1          48.0                7.8 +/-    3.13      10.0 +/-    3.13  0.100 / 0.120
G21     332.5          58.9                6.1 +/-    0.47       7.0 +/-    0.47  0.100 / 0.170
G26     276.5          16.6                8.4 +/-    3.01      20.1 +/-    3.01  0.080 / 0.300
G29     159.2          49.6                8.5 +/-    0.63      10.8 +/-    0.63  0.100 / 0.280