PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-23:57:40
G10     293.1          50.4               12.2 +/-    3.25      15.3 +/-    3.25  0.050 / 0.070
G15     47.3           34.2                9.0 +/-    1.10      14.5 +/-    1.10  0.060 / 0.080
G20     290.6          44.8               21.6 +/-    0.71      29.2 +/-    0.71  0.030 / 0.030
G21     82.0           76.6               11.4 +/-    0.46      11.7 +/-    0.46  0.040 / 0.040
G24     99.0           25.2               12.8 +/-    1.17      24.9 +/-    1.17  0.080 / 0.140
G27     303.8          32.7               10.9 +/-    1.35      18.1 +/-    1.35  0.070 / 0.130
G29     168.7          11.4               13.4 +/-    1.16      36.4 +/-    1.16  0.060 / 0.080
G32     209.0          30.8               14.6 +/-    1.56      25.2 +/-    1.56  0.050 / 0.080