PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-14:42:50
G02     37.2           51.9                6.5 +/-    0.36       8.0 +/-    0.36  0.040 / 0.060
G05     135.6          66.6                8.3 +/-    0.46       9.0 +/-    0.46  0.040 / 0.060
G06     57.8           10.3                5.7 +/-    3.01      15.7 +/-    3.01  0.030 / 0.040
G12     190.2          58.9                8.5 +/-    0.69       9.7 +/-    0.69  0.030 / 0.040
G25     279.2          59.4                6.8 +/-    0.97       7.8 +/-    0.97  0.130 / 0.260
G29     312.1          33.2                5.2 +/-    1.13       8.6 +/-    1.13  0.080 / 0.260