PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-06:12:40
G07     336.8          59.2                2.8 +/-    0.98       3.2 +/-    0.98  0.070 / 0.190
G08     94.8           51.6                6.1 +/-    0.78       7.6 +/-    0.78  0.080 / 0.160
G09     187.8          72.1                5.0 +/-    0.80       5.2 +/-    0.80  0.040 / 0.060
G11     144.2          13.5                3.5 +/-    2.14       9.1 +/-    2.14  0.040 / 0.080
G16     46.6           11.1                1.7 +/-    1.82       4.6 +/-    1.82  0.030 / 0.040
G23     156.4          42.2                7.4 +/-    1.22      10.4 +/-    1.22  0.030 / 0.050
G27     53.2           30.2                2.5 +/-    0.43       4.3 +/-    0.43  0.040 / 0.030
G28     238.5          31.0                6.0 +/-    2.07      10.2 +/-    2.07  0.030 / 0.030
G30     302.7          35.6                3.0 +/-    0.89       4.6 +/-    0.89  0.060 / 0.080