PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-13:27:40
G02     260.6          77.8                3.7 +/-    0.68       3.8 +/-    0.68  0.150 / 0.290
G05     172.5          19.3                5.9 +/-    0.96      13.2 +/-    0.96  0.090 / 0.230
G06     39.9           51.2                3.0 +/-    0.39       3.8 +/-    0.39  0.090 / 0.130
G12     321.1          60.9                3.4 +/-    0.90       3.8 +/-    0.90  0.110 / 0.130
G17     77.2           16.6                5.0 +/-    1.09      12.1 +/-    1.09  0.040 / 0.050
G19     60.8           37.7                4.1 +/-    0.84       6.3 +/-    0.84  0.030 / 0.040
G24     235.0          30.2                7.1 +/-    1.57      12.3 +/-    1.57  0.030 / 0.040
G25     317.4          21.0                3.3 +/-    3.02       7.1 +/-    3.02  0.040 / 0.040