PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-18:12:00
G02     46.8           43.6                7.7 +/-    0.88      10.5 +/-    0.88  0.040 / 0.060
G05     90.2           69.7                9.3 +/-    0.44       9.8 +/-    0.44  0.060 / 0.060
G12     187.2          47.5               10.8 +/-    1.08      14.0 +/-    1.08  0.040 / 0.060
G25     262.6          57.9               10.6 +/-    1.05      12.3 +/-    1.05  0.040 / 0.060
G29     319.9          42.5               10.0 +/-    0.49      14.0 +/-    0.49  0.040 / 0.060