PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-01:58:00
G10     302.1          53.3                9.3 +/-    0.79      11.3 +/-    0.79  0.120 / 0.080
G14     211.4          12.7               13.8 +/-    3.16      36.2 +/-    3.16  0.090 / 0.100
G15     46.0           27.7                7.3 +/-    1.78      13.3 +/-    1.78  0.030 / 0.040
G20     317.7          59.6               16.9 +/-    0.52      19.2 +/-    0.52  0.030 / 0.040
G21     104.1          73.0               11.8 +/-    0.69      12.2 +/-    0.69  0.090 / 0.370
G24     92.7           27.4                9.0 +/-    1.07      16.7 +/-    1.07  0.160 / 0.500
G27     297.1          35.4               10.0 +/-    2.56      15.8 +/-    2.56  0.070 / 0.120
G32     211.6          36.9               13.9 +/-    1.45      21.3 +/-    1.45  0.100 / 0.160