PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/05-00:27:30
G03     231.0          65.9                5.7 +/-    0.49       6.2 +/-    0.49  0.040 / 0.040
G09     305.4          20.6                3.4 +/-    1.71       7.5 +/-    1.71  0.050 / 0.050
G14     102.9          11.6                5.3 +/-    1.91      14.3 +/-    1.91  0.320 / 0.250
G16     129.3          61.1                7.1 +/-    0.30       7.9 +/-    0.30  0.170 / 0.330
G22     193.7          52.4                6.8 +/-    0.93       8.3 +/-    0.93  0.030 / 0.040
G23     321.3          51.1                4.6 +/-    1.22       5.7 +/-    1.22  0.030 / 0.030
G26     66.5           51.8                3.3 +/-    0.72       4.1 +/-    0.72  0.130 / 0.330
G31     53.3           19.1                2.7 +/-    2.96       6.2 +/-    2.96  0.170 / 0.310