PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-16:12:30
G02     26.5           60.0               10.6 +/-    0.96      12.0 +/-    0.96  0.060 / 0.040
G05     148.8          59.0               11.9 +/-    0.60      13.7 +/-    0.60  0.040 / 0.050
G06     52.9           16.5                8.9 +/-    2.08      21.3 +/-    2.08  0.030 / 0.030
G12     194.9          68.3               10.3 +/-    0.30      11.0 +/-    0.30  0.040 / 0.030
G19     96.8           14.6                9.7 +/-    2.80      24.4 +/-    2.80  0.030 / 0.030
G25     297.4          54.3               10.0 +/-    2.28      12.0 +/-    2.28  0.020 / 0.030
G29     305.5          25.8               10.0 +/-    1.42      19.1 +/-    1.42  0.280 / 0.160