PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/10-07:12:50
G07     330.7          57.0                2.4 +/-    0.59       2.8 +/-    0.59  0.040 / 0.040
G08     101.8          50.5                6.2 +/-    0.88       7.7 +/-    0.88  0.030 / 0.050
G09     192.4          76.2                4.7 +/-    0.62       4.9 +/-    0.62  0.040 / 0.070
G11     146.6          10.9                3.2 +/-   15.82       8.8 +/-   15.82  0.030 / 0.060
G16     45.3           13.8                1.8 +/-    1.64       4.7 +/-    1.64  0.030 / 0.030
G23     154.8          47.0                7.6 +/-    1.30       9.9 +/-    1.30  0.030 / 0.040
G27     57.4           32.4                3.1 +/-    0.48       5.2 +/-    0.48  0.030 / 0.060
G28     235.1          27.5                6.5 +/-    1.71      12.0 +/-    1.71  0.030 / 0.040
G30     298.9          32.2                3.5 +/-    1.76       5.8 +/-    1.76  0.090 / 0.210