PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-14:43:10
G02     58.3           33.3                6.9 +/-    1.57      11.2 +/-    1.57  0.030 / 0.020
G05     64.2           64.8                8.3 +/-    0.35       9.0 +/-    0.35  0.030 / 0.020
G12     186.8          36.5               12.7 +/-    1.00      19.6 +/-    1.00  0.040 / 0.050
G13     131.6          13.3               14.6 +/-    4.40      37.7 +/-    4.40  0.040 / 0.040
G15     164.4          10.4               -5.6 +/-   21.38     -15.5 +/-   21.38  0.050 / 0.070
G20     207.2          55.6               13.3 +/-    0.65      15.8 +/-    0.65  0.040 / 0.080
G25     239.2          53.4                9.9 +/-    4.53      12.0 +/-    4.53  0.050 / 0.050
G29     331.5          57.4                6.8 +/-    0.56       7.9 +/-    0.56  0.070 / 0.080