PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-23:58:10
G10     258.1          33.8               10.3 +/-    2.16      16.6 +/-    2.16  0.040 / 0.040
G13     46.6           23.7                8.4 +/-    1.65      16.8 +/-    1.65  0.040 / 0.040
G15     70.5           54.2                8.9 +/-    0.61      10.7 +/-    0.61  0.200 / 0.230
G16     288.4          14.6                6.9 +/-    1.51      17.2 +/-    1.51  0.120 / 0.090
G20     281.7          55.4                9.7 +/-    2.46      11.6 +/-    2.46  0.130 / 0.140
G21     344.7          65.3                8.9 +/-    1.07       9.7 +/-    1.07  0.070 / 0.160
G26     261.2          12.1               10.6 +/-    1.62      28.2 +/-    1.62  0.100 / 0.250
G27     322.0          10.9              -11.5 +/-   25.65     -31.4 +/-   25.65  0.040 / 0.030
G29     165.2          40.2               10.6 +/-    1.25      15.3 +/-    1.25  0.040 / 0.040