PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-18:58:10
G05     48.0           20.7                8.6 +/-    2.14      18.6 +/-    2.14  0.050 / 0.070
G10     235.5          11.9               -2.9 +/-   35.72      -7.7 +/-   35.72  0.040 / 0.060
G13     76.8           36.2               11.2 +/-    0.96      17.3 +/-    0.96  0.220 / 0.560
G15     133.7          50.7               10.3 +/-    0.81      12.8 +/-    0.81  0.180 / 0.370
G16     314.6          12.4                7.9 +/-    4.49      20.8 +/-    4.49  0.140 / 0.610
G20     247.1          36.1               11.8 +/-    1.60      18.4 +/-    1.60  0.150 / 0.510
G21     312.5          46.5               10.0 +/-    1.08      13.2 +/-    1.08  0.180 / 0.230
G25     197.9          10.5               10.6 +/-    3.20      29.2 +/-    3.20  0.200 / 0.150
G26     288.5          20.4               10.4 +/-    1.57      22.6 +/-    1.57  0.080 / 0.100
G29     154.3          74.1               10.7 +/-    0.64      11.0 +/-    0.64  0.070 / 0.090