PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-05:12:40
G01     229.9          20.6                8.5 +/-    1.79      18.5 +/-    1.79  0.050 / 0.070
G03     300.3          62.0                5.1 +/-    0.56       5.7 +/-    0.56  0.040 / 0.070
G14     83.0           25.9                4.8 +/-    2.05       9.2 +/-    2.05  0.090 / 0.160
G16     154.0          38.7                8.9 +/-    1.50      13.3 +/-    1.50  0.090 / 0.170
G22     233.8          74.4                6.5 +/-    1.18       6.7 +/-    1.18  0.160 / 0.320
G23     302.6          32.2                4.2 +/-    1.24       7.0 +/-    1.24  0.080 / 0.340
G26     112.4          53.1                6.8 +/-    0.64       8.3 +/-    0.64  0.040 / 0.040
G31     42.5           38.8                2.7 +/-    0.68       4.0 +/-    0.68  0.040 / 0.040
G32     94.6           11.3                4.7 +/-    1.57      12.6 +/-    1.57  0.060 / 0.110