PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-16:57:50
G02     15.3           66.6                8.4 +/-    0.68       9.1 +/-    0.68  0.030 / 0.050
G05     155.2          52.2               12.7 +/-    0.61      15.6 +/-    0.61  0.040 / 0.060
G06     49.3           22.0                7.5 +/-    0.76      15.8 +/-    0.76  0.030 / 0.030
G12     205.2          75.5               10.7 +/-    0.98      11.0 +/-    0.98  0.030 / 0.040
G19     90.6           19.2                9.8 +/-    1.07      21.9 +/-    1.07  0.090 / 0.120
G25     306.7          48.3                9.9 +/-    0.63      12.8 +/-    0.63  0.080 / 0.150
G29     300.2          20.5               10.0 +/-    1.08      21.7 +/-    1.08  0.050 / 0.080