PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-16:12:50
G10     278.6          43.8                8.7 +/-    1.46      12.0 +/-    1.46  0.080 / 0.120
G13     38.6           11.1                7.5 +/-    4.49      20.5 +/-    4.49  0.070 / 0.120
G15     50.3           38.9                8.8 +/-    0.82      13.1 +/-    0.82  0.040 / 0.040
G18     330.3          67.2                8.9 +/-    0.99       9.6 +/-    0.99  0.040 / 0.050
G20     60.5           29.7                7.7 +/-    0.95      13.6 +/-    0.95  0.060 / 0.140
G21     60.7           75.2               10.3 +/-    0.67      10.6 +/-    0.67  0.050 / 0.130
G24     112.4          19.9               13.6 +/-    1.54      29.9 +/-    1.54  0.080 / 0.170
G27     311.7          27.5                8.6 +/-    1.19      15.8 +/-    1.19  0.080 / 0.140
G29     166.9          16.9               13.1 +/-    2.00      31.1 +/-    2.00  0.160 / 0.550
G32     206.6          18.1               12.0 +/-    3.35      27.7 +/-    3.35  0.160 / 0.670