PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-18:58:00
G05     52.2           10.6                8.4 +/-    1.54      23.0 +/-    1.54  0.170 / 0.300
G10     243.0          21.7               12.8 +/-    0.81      27.1 +/-    0.81  0.100 / 0.350
G13     62.3           33.0                9.1 +/-    0.44      15.0 +/-    0.44  0.040 / 0.070
G15     106.2          57.3               10.6 +/-    0.56      12.4 +/-    0.56  0.040 / 0.070
G16     304.4          15.3                6.8 +/-    5.09      16.7 +/-    5.09  0.060 / 0.140
G20     259.4          45.6               11.5 +/-    1.33      15.4 +/-    1.33  0.060 / 0.140
G21     323.1          53.0               11.2 +/-    1.04      13.6 +/-    1.04  0.130 / 0.740
G26     277.1          18.5               10.8 +/-    1.17      24.6 +/-    1.17  0.150 / 0.790
G29     160.1          61.5               13.3 +/-    1.38      14.9 +/-    1.38  0.030 / 0.040