PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-21:42:30
G02     33.3           55.6               12.1 +/-    1.17      14.3 +/-    1.17  0.030 / 0.050
G05     138.3          64.6               13.4 +/-    0.39      14.7 +/-    0.39  0.050 / 0.050
G06     56.6           12.2                8.7 +/-    0.94      23.3 +/-    0.94  0.030 / 0.040
G12     192.6          61.6               13.4 +/-    0.54      15.0 +/-    0.54  0.040 / 0.040
G20     198.2          32.1               13.1 +/-    1.26      21.9 +/-    1.26  0.040 / 0.040
G25     283.3          59.3               12.8 +/-    2.69      14.6 +/-    2.69  0.040 / 0.050
G29     311.0          32.5               10.7 +/-    0.79      17.8 +/-    0.79  0.030 / 0.030