PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-22:58:10
G02     62.8           31.7                9.6 +/-    1.10      16.2 +/-    1.10  0.050 / 0.100
G05     52.8           58.7                9.4 +/-    0.46      10.8 +/-    0.46  0.040 / 0.090
G12     182.9          24.6               11.9 +/-    2.14      23.4 +/-    2.14  0.030 / 0.040
G13     124.6          19.5               13.3 +/-    2.74      29.6 +/-    2.74  0.030 / 0.050
G15     162.5          15.6               15.8 +/-    2.77      38.8 +/-    2.77  0.100 / 0.290
G20     210.6          68.9               12.5 +/-    0.77      13.3 +/-    0.77  0.100 / 0.310
G21     275.9          21.0                9.7 +/-    1.08      20.8 +/-    1.08  0.070 / 0.100
G25     221.9          45.4               12.5 +/-    2.07      16.7 +/-    2.07  0.060 / 0.120
G29     333.8          62.3               10.5 +/-    0.89      11.7 +/-    0.89  0.040 / 0.040