PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-20:27:50
G08     319.3          12.6                8.8 +/-    1.72      23.1 +/-    1.72  0.060 / 0.090
G10     306.6          54.7                9.5 +/-    1.07      11.3 +/-    1.07  0.060 / 0.080
G14     211.8          16.8               12.7 +/-    1.60      30.2 +/-    1.60  0.030 / 0.050
G15     45.9           26.7                9.2 +/-    1.16      17.2 +/-    1.16  0.040 / 0.040
G20     6.4            64.7               11.0 +/-    0.54      12.0 +/-    0.54  0.090 / 0.280
G21     112.7          69.4               13.2 +/-    0.79      14.0 +/-    0.79  0.090 / 0.240
G24     87.7           27.8               10.5 +/-    0.79      19.2 +/-    0.79  0.120 / 0.310
G27     295.3          35.5               12.2 +/-    1.09      19.1 +/-    1.09  0.120 / 0.270
G32     213.1          38.4               13.6 +/-    0.36      20.3 +/-    0.36  0.080 / 0.140