PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-18:28:10
G02     238.7          73.9               10.7 +/-    0.46      11.1 +/-    0.46  0.030 / 0.040
G05     172.0          15.2               14.1 +/-    1.92      34.8 +/-    1.92  0.030 / 0.040
G06     40.7           59.3                9.5 +/-    0.36      10.8 +/-    0.36  0.110 / 0.130
G12     320.9          49.2                9.5 +/-    0.73      12.1 +/-    0.73  0.110 / 0.130
G17     68.3           25.0               11.3 +/-    2.03      22.0 +/-    2.03  0.070 / 0.110
G19     56.6           38.0                9.1 +/-    1.02      13.6 +/-    1.02  0.050 / 0.130
G24     246.7          35.2               11.8 +/-    1.85      18.7 +/-    1.85  0.050 / 0.050