PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/22-15:57:30
G10     251.5          28.0                8.9 +/-    0.69      16.2 +/-    0.69  0.120 / 0.560
G13     52.4           28.9                1.6 +/-    1.59       2.9 +/-    1.59  0.140 / 0.520
G15     87.6           58.5                8.5 +/-    0.67       9.8 +/-    0.67  0.040 / 0.040
G16     295.5          15.2                6.8 +/-    4.65      16.8 +/-    4.65  0.040 / 0.040
G20     271.5          51.6                9.5 +/-    1.02      11.7 +/-    1.02  0.030 / 0.050
G21     338.9          62.4                7.3 +/-    0.75       8.2 +/-    0.75  0.030 / 0.050
G26     268.7          15.0                7.1 +/-    3.52      17.7 +/-    3.52  0.070 / 0.180
G29     164.0          47.9               10.2 +/-    1.39      13.3 +/-    1.39  0.060 / 0.180