PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-13:42:50
G02     31.4           56.6                4.6 +/-    0.86       5.4 +/-    0.86  0.040 / 0.050
G05     146.4          61.1                7.8 +/-    1.11       8.8 +/-    1.11  0.040 / 0.050
G06     53.9           15.4                4.7 +/-    1.70      11.5 +/-    1.70  0.030 / 0.030
G12     196.0          66.8                4.7 +/-    0.88       5.1 +/-    0.88  0.030 / 0.040
G19     99.2           12.2                6.4 +/-    2.13      16.9 +/-    2.13  0.140 / 0.410
G25     291.5          57.1                3.9 +/-    0.89       4.6 +/-    0.89  0.180 / 0.280
G29     307.7          28.4                2.2 +/-    1.68       3.9 +/-    1.68  0.030 / 0.040