PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-13:27:50
G08     319.1          12.1                4.1 +/-    4.65      10.9 +/-    4.65  0.050 / 0.070
G10     311.9          55.8                1.7 +/-    1.81       2.1 +/-    1.81  0.040 / 0.080
G14     213.6          19.6                3.1 +/-    3.30       6.9 +/-    3.30  0.030 / 0.030
G15     45.5           18.2                3.5 +/-    1.98       7.9 +/-    1.98  0.030 / 0.030
G20     76.7           16.3                3.1 +/-    2.32       7.6 +/-    2.32  0.180 / 0.410
G21     121.2          64.2                3.6 +/-    0.42       4.0 +/-    0.42  0.240 / 0.360
G24     87.5           29.5                5.9 +/-    1.32      10.4 +/-    1.32  0.170 / 0.230
G27     287.6          37.6                2.8 +/-    1.76       4.3 +/-    1.76  0.130 / 0.250
G32     215.6          42.2                3.4 +/-    1.12       4.8 +/-    1.12  0.090 / 0.110