PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-14:12:20
G02     38.8           49.8                4.5 +/-    1.61       5.7 +/-    1.61  0.030 / 0.030
G05     133.3          66.7                7.3 +/-    0.59       7.9 +/-    0.59  0.030 / 0.030
G06     57.5           9.6                 5.9 +/-    2.57      16.7 +/-    2.57  0.030 / 0.030
G12     188.9          59.0                7.3 +/-    0.56       8.3 +/-    0.56  0.030 / 0.040
G25     286.1          56.5                3.1 +/-    2.00       3.7 +/-    2.00  0.040 / 0.040
G29     311.5          32.4                5.8 +/-    0.92       9.6 +/-    0.92  0.040 / 0.040