PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/22-15:57:40
G10     251.5          28.0                7.5 +/-    1.76      13.8 +/-    1.76  0.100 / 0.500
G13     52.4           28.9                2.0 +/-    1.90       3.6 +/-    1.90  0.110 / 0.440
G15     87.6           58.5                8.8 +/-    0.63      10.2 +/-    0.63  0.040 / 0.040
G16     295.5          15.2                3.7 +/-    2.20       9.1 +/-    2.20  0.050 / 0.040
G20     271.5          51.6                9.5 +/-    2.96      11.8 +/-    2.96  0.050 / 0.040
G21     338.9          62.4                7.6 +/-    0.56       8.5 +/-    0.56  0.030 / 0.040
G26     268.7          15.0                5.6 +/-    1.19      13.9 +/-    1.19  0.060 / 0.140
G29     164.0          47.9               10.0 +/-    0.71      12.9 +/-    0.71  0.060 / 0.190