PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-00:27:50
G10     260.1          35.1               10.9 +/-    1.79      17.2 +/-    1.79  0.160 / 0.230
G13     45.3           22.4                8.1 +/-    1.91      16.8 +/-    1.91  0.130 / 0.240
G15     67.3           53.0                9.6 +/-    0.74      11.7 +/-    0.74  0.080 / 0.090
G16     286.6          14.2                6.7 +/-    1.47      17.1 +/-    1.47  0.130 / 0.090
G20     285.0          56.5                9.9 +/-    2.31      11.6 +/-    2.31  0.040 / 0.040
G21     348.1          66.7               10.1 +/-    1.01      10.9 +/-    1.01  0.040 / 0.040
G24     126.7          10.1               -7.4 +/-   35.89     -20.5 +/-   35.89  0.110 / 0.210
G26     259.5          11.1                8.3 +/-    4.42      22.6 +/-    4.42  0.100 / 0.300
G27     321.6          12.5                5.4 +/-    3.80      14.3 +/-    3.80  0.040 / 0.040
G29     165.5          37.9               10.3 +/-    0.94      15.5 +/-    0.94  0.030 / 0.040