PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-19:27:40
G10     247.9          26.1               12.4 +/-    1.62      23.7 +/-    1.62  0.040 / 0.050
G13     55.9           30.4               11.8 +/-    1.55      20.5 +/-    1.55  0.040 / 0.060
G15     93.7           58.1               12.0 +/-    0.95      13.9 +/-    0.95  0.080 / 0.150
G16     298.5          15.9                9.0 +/-    3.55      21.9 +/-    3.55  0.060 / 0.110
G20     266.8          49.6               11.3 +/-    4.06      14.4 +/-    4.06  0.030 / 0.040
G21     329.6          57.2               11.9 +/-    0.40      13.9 +/-    0.40  0.040 / 0.040
G26     271.1          16.6               10.9 +/-    0.83      25.9 +/-    0.83  0.230 / 0.310
G29     162.6          54.4               13.0 +/-    0.40      15.6 +/-    0.40  0.280 / 0.400