PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/27-11:27:50
G02     20.9           64.4                3.8 +/-    0.48       4.2 +/-    0.48  0.020 / 0.030
G05     156.1          51.0                9.1 +/-    1.14      11.3 +/-    1.14  0.020 / 0.030
G06     48.1           24.8                3.5 +/-    0.91       6.9 +/-    0.91  0.050 / 0.060
G12     225.9          78.0                5.6 +/-    0.65       5.7 +/-    0.65  0.050 / 0.070
G19     90.3           18.2                5.7 +/-    0.73      13.1 +/-    0.73  0.030 / 0.040
G25     305.5          50.9                4.5 +/-    1.31       5.6 +/-    1.31  0.040 / 0.040
G29     300.2          21.4                3.5 +/-    1.34       7.5 +/-    1.34  0.090 / 0.140