PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/24-18:42:50
G02     39.4           50.2                8.8 +/-    0.57      11.1 +/-    0.57  0.030 / 0.030
G05     117.7          68.6                9.6 +/-    0.69      10.2 +/-    0.69  0.030 / 0.050
G12     184.9          52.9                8.5 +/-    1.51      10.3 +/-    1.51  0.050 / 0.060
G25     277.7          58.5                9.8 +/-    1.08      11.2 +/-    1.08  0.050 / 0.060
G29     313.3          34.2                7.8 +/-    2.20      12.5 +/-    2.20  0.040 / 0.060