PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-00:58:10
G05     52.8           10.6                7.9 +/-    1.39      21.8 +/-    1.39  0.200 / 0.210
G10     244.0          19.8               10.5 +/-    1.74      23.2 +/-    1.74  0.150 / 0.190
G13     63.1           35.0                9.1 +/-    0.54      14.5 +/-    0.54  0.220 / 0.370
G15     109.0          57.7               13.2 +/-    0.61      15.3 +/-    0.61  0.370 / 0.390
G16     305.0          14.3                8.1 +/-    2.93      20.5 +/-    2.93  0.200 / 0.090
G18     256.9          49.1               11.6 +/-    1.05      14.8 +/-    1.05  0.150 / 0.100
G20     38.2           54.3                9.3 +/-    0.83      11.2 +/-    0.83  0.210 / 0.420
G21     323.6          54.4               11.0 +/-    1.43      13.2 +/-    1.43  0.220 / 0.520
G26     277.3          18.2                7.9 +/-    2.15      18.2 +/-    2.15  0.070 / 0.070
G29     161.6          57.4               10.4 +/-    0.80      12.1 +/-    0.80  0.110 / 0.080