PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-14:57:30
G02     31.0           56.8                6.8 +/-    0.45       8.0 +/-    0.45  0.060 / 0.040
G05     146.9          61.3                9.7 +/-    0.53      10.9 +/-    0.53  0.050 / 0.050
G06     54.4           14.6                5.3 +/-    1.05      13.3 +/-    1.05  0.040 / 0.040
G12     193.8          65.6                6.7 +/-    1.11       7.3 +/-    1.11  0.020 / 0.040
G19     99.5           12.2                7.7 +/-    2.12      20.4 +/-    2.12  0.030 / 0.040
G25     291.6          56.7                7.0 +/-    0.65       8.2 +/-    0.65  0.050 / 0.040
G29     307.9          28.4                5.0 +/-    0.47       9.0 +/-    0.47  0.120 / 0.220