PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-09:12:50
G01     320.0          15.2               -5.0 +/-   27.91     -12.5 +/-   27.91  0.050 / 0.060
G08     263.1          14.6                6.1 +/-    1.32      15.3 +/-    1.32  0.040 / 0.060
G10     74.5           55.0                3.6 +/-    0.36       4.3 +/-    0.36  0.140 / 0.240
G11     306.8          20.6                4.7 +/-    2.75      10.3 +/-    2.75  0.210 / 0.230
G14     277.6          66.2                3.4 +/-    0.71       3.7 +/-    0.71  0.100 / 0.340
G18     307.9          37.1                4.3 +/-    2.18       6.5 +/-    2.18  0.090 / 0.300
G20     108.9          11.6                3.9 +/-    1.73      10.4 +/-    1.73  0.040 / 0.040
G27     225.9          10.6                5.3 +/-    3.12      14.5 +/-    3.12  0.040 / 0.040
G31     174.9          40.4                6.2 +/-    0.59       9.0 +/-    0.59  0.170 / 0.430
G32     5.4            68.7                4.5 +/-    0.45       4.8 +/-    0.45  0.190 / 0.430