PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-09:57:50
G10     302.4          53.2                3.4 +/-    0.86       4.1 +/-    0.86  0.190 / 0.410
G14     211.8          12.6                5.9 +/-    3.63      15.5 +/-    3.63  0.150 / 0.340
G15     45.6           23.9                3.5 +/-    2.76       7.1 +/-    2.76  0.030 / 0.040
G20     66.5           31.1                3.3 +/-    2.08       5.7 +/-    2.08  0.030 / 0.040
G21     107.9          71.0                5.2 +/-    0.75       5.5 +/-    0.75  0.060 / 0.060
G24     93.9           27.8                4.6 +/-    2.09       8.4 +/-    2.09  0.060 / 0.070
G27     295.5          36.0                5.5 +/-    2.44       8.6 +/-    2.44  0.090 / 0.110
G32     212.1          36.9                7.3 +/-    1.56      11.2 +/-    1.56  0.070 / 0.130