PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-00:27:50
G10     258.2          33.9                9.5 +/-    2.57      15.4 +/-    2.57  0.120 / 0.120
G13     46.5           23.7                8.3 +/-    2.08      16.8 +/-    2.08  0.140 / 0.100
G15     70.1           54.0                9.4 +/-    0.54      11.4 +/-    0.54  0.040 / 0.050
G16     288.4          14.5                7.8 +/-    1.63      19.7 +/-    1.63  0.040 / 0.050
G20     282.0          55.5               10.4 +/-    2.16      12.4 +/-    2.16  0.090 / 0.220
G21     345.1          65.5               10.2 +/-    1.03      11.1 +/-    1.03  0.090 / 0.210
G26     261.1          12.0               10.5 +/-    6.63      28.0 +/-    6.63  0.040 / 0.060
G29     165.1          39.9               10.9 +/-    1.09      15.9 +/-    1.09  0.040 / 0.070