PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-03:58:00
G01     233.3          23.7                7.2 +/-    1.51      14.5 +/-    1.51  0.130 / 0.240
G03     305.4          59.7                4.7 +/-    1.32       5.3 +/-    1.32  0.190 / 0.180
G14     77.8           30.5                4.6 +/-    1.17       8.0 +/-    1.17  0.090 / 0.120
G16     151.5          36.7                6.5 +/-    1.01      10.1 +/-    1.01  0.080 / 0.120
G18     207.9          13.0                6.0 +/-    3.20      15.7 +/-    3.20  0.040 / 0.030
G22     251.3          75.1                6.9 +/-    0.56       7.1 +/-    0.56  0.040 / 0.030
G23     300.1          30.3                6.7 +/-    1.31      11.7 +/-    1.31  0.040 / 0.050
G26     112.1          51.0                6.8 +/-    0.49       8.5 +/-    0.49  0.050 / 0.050
G31     42.5           39.8                3.9 +/-    1.01       5.6 +/-    1.01  0.080 / 0.090
G32     92.6           10.7                5.3 +/-    2.29      14.5 +/-    2.29  0.070 / 0.090