PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-09:43:10
G02     59.8           31.6                4.5 +/-    2.06       7.7 +/-    2.06  0.030 / 0.040
G05     59.5           61.4                4.4 +/-    0.30       4.9 +/-    0.30  0.040 / 0.030
G12     186.6          35.4                7.8 +/-    1.39      12.2 +/-    1.39  0.090 / 0.080
G13     130.2          14.2                7.3 +/-    2.22      18.5 +/-    2.22  0.080 / 0.080
G15     163.2          11.7                3.7 +/-    8.49      10.0 +/-    8.49  0.030 / 0.040
G20     209.4          53.8                7.3 +/-    0.51       8.8 +/-    0.51  0.040 / 0.050
G21     271.2          19.1                3.9 +/-    1.69       8.8 +/-    1.69  0.060 / 0.100
G25     239.9          52.8                6.6 +/-    3.58       8.1 +/-    3.58  0.080 / 0.080
G29     329.2          55.3                4.1 +/-    0.90       4.8 +/-    0.90  0.100 / 0.150