PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/08-12:58:10
G02     74.0           21.3                5.1 +/-    1.33      10.8 +/-    1.33  0.110 / 0.170
G05     45.4           45.8                5.8 +/-    0.82       7.7 +/-    0.82  0.110 / 0.160
G12     181.0          15.0                6.5 +/-    1.98      16.1 +/-    1.98  0.070 / 0.130
G13     111.6          26.8               10.6 +/-    1.02      19.9 +/-    1.02  0.070 / 0.160
G15     154.9          26.8                8.9 +/-    1.05      16.7 +/-    1.05  0.110 / 0.250
G20     227.4          12.9                4.5 +/-    4.14      11.7 +/-    4.14  0.150 / 0.200
G21     288.1          30.7                5.2 +/-    1.04       9.0 +/-    1.04  0.030 / 0.020
G25     210.5          34.1               19.5 +/-    1.87      31.5 +/-    1.87  0.030 / 0.020
G26     317.1          11.7               -0.2 +/-   15.21      -0.5 +/-   15.21  0.040 / 0.040
G29     345.7          74.2                7.9 +/-    0.66       8.1 +/-    0.66  0.040 / 0.040