PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-16:27:40
G03     221.4          65.4               11.9 +/-    0.92      12.9 +/-    0.92  0.100 / 0.330
G09     304.8          19.6                7.7 +/-    1.33      17.1 +/-    1.33  0.110 / 0.340
G14     101.3          14.9               11.3 +/-    1.88      28.0 +/-    1.88  0.050 / 0.060
G16     119.1          61.2               13.0 +/-    0.46      14.6 +/-    0.46  0.050 / 0.080
G22     188.7          49.7               13.1 +/-    2.63      16.6 +/-    2.63  0.060 / 0.070
G23     324.7          54.4                9.4 +/-    0.72      11.2 +/-    0.72  0.050 / 0.070
G26     63.3           48.9                9.8 +/-    0.33      12.5 +/-    0.33  0.140 / 0.330
G31     54.3           15.9                9.1 +/-    1.42      22.2 +/-    1.42  0.130 / 0.360