PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-15:58:00
G10     299.2          52.1                7.5 +/-    1.32       9.3 +/-    1.32  0.080 / 0.030
G14     210.8          13.3                9.1 +/-    2.04      23.6 +/-    2.04  0.080 / 0.030
G15     45.7           25.3                6.7 +/-    2.00      13.1 +/-    2.00  0.060 / 0.130
G18     7.4            65.2                7.4 +/-    0.61       8.1 +/-    0.61  0.060 / 0.100
G20     71.5           19.8                5.7 +/-    2.05      12.6 +/-    2.05  0.100 / 0.180
G21     107.9          68.5                8.5 +/-    0.85       9.0 +/-    0.85  0.090 / 0.180
G24     96.9           27.2                7.1 +/-    1.18      13.3 +/-    1.18  0.080 / 0.060
G27     297.2          35.6                8.9 +/-    1.61      13.9 +/-    1.61  0.100 / 0.060
G32     211.6          33.2                9.5 +/-    2.20      15.7 +/-    2.20  0.110 / 0.460