PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-20:12:30
G02     56.8           35.8                8.4 +/-    0.48      13.2 +/-    0.48  0.030 / 0.040
G05     61.3           63.0                8.7 +/-    0.48       9.7 +/-    0.48  0.020 / 0.030
G12     181.9          31.2               11.3 +/-    1.12      19.2 +/-    1.12  0.130 / 0.340
G13     129.2          14.0               12.9 +/-    3.31      33.0 +/-    3.31  0.190 / 0.400
G21     269.5          15.2                9.7 +/-    1.26      24.1 +/-    1.26  0.080 / 0.060
G25     238.0          53.1               10.2 +/-    5.23      12.4 +/-    5.23  0.110 / 0.060
G29     326.2          51.5                8.6 +/-    0.98      10.7 +/-    0.98  0.090 / 0.090