PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-04:27:50
G01     120.4          17.0                5.9 +/-    1.06      14.1 +/-    1.06  0.030 / 0.060
G07     77.3           66.8                4.9 +/-    0.83       5.3 +/-    0.83  0.030 / 0.060
G08     45.6           32.6                3.8 +/-    0.53       6.3 +/-    0.53  0.020 / 0.030
G09     177.5          28.0                7.9 +/-    1.30      14.5 +/-    1.30  0.020 / 0.040
G11     109.4          38.7                5.6 +/-    0.71       8.3 +/-    0.71  0.040 / 0.060
G13     319.0          17.0                1.5 +/-    1.02       3.5 +/-    1.02  0.060 / 0.060
G17     201.2          24.0                4.3 +/-    1.11       8.5 +/-    1.11  0.060 / 0.150
G28     291.3          57.2                4.7 +/-    0.80       5.5 +/-    0.80  0.050 / 0.150
G30     347.9          68.4                2.0 +/-    0.78       2.1 +/-    0.78  0.080 / 0.190