PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-10:43:10
G05     48.6           16.9                2.8 +/-    0.72       6.7 +/-    0.72  0.060 / 0.130
G13     78.5           37.0                6.9 +/-    1.00      10.6 +/-    1.00  0.110 / 0.110
G15     123.4          51.6                7.5 +/-    0.69       9.3 +/-    0.69  0.030 / 0.040
G16     316.7          10.9               -2.7 +/-   11.18      -7.4 +/-   11.18  0.030 / 0.030
G20     15.6           72.5                4.4 +/-    0.37       4.6 +/-    0.37  0.160 / 0.270
G21     313.9          48.2                3.5 +/-    0.99       4.5 +/-    0.99  0.150 / 0.200
G25     200.7          12.1                4.1 +/-    1.98      11.0 +/-    1.98  0.040 / 0.050
G26     289.2          20.4                5.8 +/-    1.27      12.6 +/-    1.27  0.040 / 0.060
G29     153.3          71.8                7.7 +/-    0.58       8.0 +/-    0.58  0.040 / 0.060