PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-18:27:50
G10     248.4          26.7               17.4 +/-    0.84      32.7 +/-    0.84  0.040 / 0.060
G13     55.3           30.0               12.5 +/-    0.99      21.9 +/-    0.99  0.040 / 0.060
G15     90.9           57.7               13.8 +/-    0.83      16.0 +/-    0.83  0.060 / 0.160
G16     297.7          16.0               13.2 +/-    2.80      32.0 +/-    2.80  0.060 / 0.140
G20     267.9          50.4               14.8 +/-    1.33      18.5 +/-    1.33  0.140 / 0.570
G21     330.5          57.7               13.3 +/-    0.82      15.5 +/-    0.82  0.170 / 0.720
G26     270.5          16.4               16.1 +/-    2.40      38.6 +/-    2.40  0.030 / 0.050
G29     162.9          53.9               15.8 +/-    0.78      19.1 +/-    0.78  0.030 / 0.050