PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-05:27:40
G01     88.7           32.1                7.8 +/-    1.08      13.1 +/-    1.08  0.050 / 0.040
G07     126.6          43.9                9.9 +/-    0.74      13.6 +/-    0.74  0.050 / 0.030
G11     68.1           39.2                6.8 +/-    0.98      10.0 +/-    0.98  0.030 / 0.040
G13     294.5          35.5                8.6 +/-    3.56      13.5 +/-    3.56  0.040 / 0.040
G15     314.2          11.0               -2.9 +/-   17.66      -8.0 +/-   17.66  0.090 / 0.090
G17     215.5          55.7               11.0 +/-    0.72      13.0 +/-    0.72  0.090 / 0.080
G19     215.1          29.4                8.7 +/-    2.93      15.5 +/-    2.93  0.220 / 0.180
G28     353.1          61.5                5.5 +/-    0.83       6.2 +/-    0.83  0.110 / 0.140
G30     109.7          73.4                9.3 +/-    0.95       9.6 +/-    0.95  0.060 / 0.090