PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-15:27:00
G02     43.0           47.1                6.3 +/-    0.71       8.3 +/-    0.71  0.050 / 0.050
G05     116.6          70.5                8.6 +/-    0.80       9.1 +/-    0.80  0.040 / 0.040
G12     187.1          50.9               10.8 +/-    1.19      13.5 +/-    1.19  0.040 / 0.040
G25     264.6          59.8                7.8 +/-    1.53       8.8 +/-    1.53  0.040 / 0.050
G29     316.7          38.5                7.4 +/-    0.95      11.0 +/-    0.95  0.030 / 0.020