PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/17-10:42:30
G02     200.8          14.7                4.3 +/-    2.65      10.9 +/-    2.65  0.100 / 0.220
G06     171.5          50.1                7.0 +/-    1.57       8.8 +/-    1.57  0.130 / 0.230
G13     229.6          15.7                4.4 +/-    2.22      10.9 +/-    2.22  0.090 / 0.130
G17     20.6           61.1                5.0 +/-    0.46       5.6 +/-    0.46  0.080 / 0.130
G19     297.7          69.7                4.7 +/-    1.08       5.0 +/-    1.08  0.120 / 0.270
G24     310.6          29.7                5.8 +/-    1.68      10.2 +/-    1.68  0.110 / 0.250
G28     82.6           42.9                5.9 +/-    0.77       8.2 +/-    0.77  0.040 / 0.040
G30     157.2          19.7                5.1 +/-    2.12      11.3 +/-    2.12  0.040 / 0.030