PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-18:57:50
G10     255.5          32.2               19.2 +/-    2.50      32.1 +/-    2.50  0.050 / 0.050
G13     48.5           25.4               15.8 +/-    2.91      30.6 +/-    2.91  0.050 / 0.050
G15     75.5           55.8               16.2 +/-    1.10      19.2 +/-    1.10  0.120 / 0.470
G16     289.8          15.4               14.9 +/-    2.63      36.6 +/-    2.63  0.170 / 0.490
G20     279.3          55.2               16.5 +/-    2.95      19.6 +/-    2.95  0.190 / 0.150
G21     340.5          63.2               16.1 +/-    1.22      17.8 +/-    1.22  0.280 / 0.200
G26     263.1          13.3               17.1 +/-    3.23      44.3 +/-    3.23  0.040 / 0.040
G29     165.2          44.9               18.4 +/-    1.19      24.9 +/-    1.19  0.050 / 0.040