PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/11-16:57:50
G08     306.7          20.9                6.0 +/-    2.06      12.8 +/-    2.06  0.040 / 0.060
G10     335.9          60.6                6.5 +/-    0.93       7.3 +/-    0.93  0.030 / 0.070
G14     218.6          32.7               10.8 +/-    1.72      17.9 +/-    1.72  0.040 / 0.030
G15     47.2           10.5                7.1 +/-    1.09      19.5 +/-    1.09  0.030 / 0.040
G20     40.5           59.7                7.7 +/-    0.68       8.8 +/-    0.68  0.060 / 0.150
G21     135.7          52.6               10.8 +/-    0.88      13.3 +/-    0.88  0.060 / 0.120
G24     67.8           27.7                7.1 +/-    0.82      13.0 +/-    0.82  0.060 / 0.110
G27     276.1          36.6                9.1 +/-    1.21      14.0 +/-    1.21  0.060 / 0.090
G32     224.3          52.8                9.7 +/-    1.09      11.9 +/-    1.09  0.080 / 0.080