PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-00:57:40
G10     293.5          50.0                7.8 +/-    0.56       9.9 +/-    0.56  0.050 / 0.050
G14     209.5          11.7                9.6 +/-   21.82      25.9 +/-   21.82  0.040 / 0.050
G15     46.8           31.7                7.1 +/-    0.94      12.1 +/-    0.94  0.060 / 0.130
G18     350.9          66.5                8.6 +/-    0.54       9.3 +/-    0.54  0.070 / 0.130
G20     70.4           18.3                7.6 +/-    0.99      17.5 +/-    0.99  0.040 / 0.050
G21     89.9           74.9                9.8 +/-    0.69      10.1 +/-    0.69  0.030 / 0.050
G24     101.2          25.6               10.4 +/-    0.71      19.9 +/-    0.71  0.220 / 0.610
G27     300.9          34.3                9.2 +/-    1.28      14.8 +/-    1.28  0.150 / 0.460
G32     210.3          28.6               13.0 +/-    1.54      23.4 +/-    1.54  0.050 / 0.090