PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/15-09:58:10
G10     247.4          24.9                5.6 +/-    1.06      10.9 +/-    1.06  0.110 / 0.130
G13     56.9           31.3                5.1 +/-    1.27       8.8 +/-    1.27  0.090 / 0.110
G15     93.2           57.6                6.2 +/-    0.52       7.2 +/-    0.52  0.040 / 0.040
G16     303.6          13.8                2.0 +/-    1.47       5.2 +/-    1.47  0.040 / 0.040
G20     265.3          48.6                4.2 +/-    4.46       5.4 +/-    4.46  0.030 / 0.030
G21     336.9          61.1                4.0 +/-    0.84       4.5 +/-    0.84  0.040 / 0.040
G29     160.4          50.1                7.0 +/-    0.58       8.8 +/-    0.58  0.090 / 0.250