PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-18:42:40
G02     22.1           64.0               10.3 +/-    0.42      11.3 +/-    0.42  0.040 / 0.060
G05     158.6          51.2               16.8 +/-    0.74      20.9 +/-    0.74  0.040 / 0.050
G06     49.6           22.7                8.2 +/-    0.67      16.9 +/-    0.67  0.030 / 0.040
G12     216.8          75.9               10.0 +/-    1.07      10.3 +/-    1.07  0.020 / 0.030
G19     94.3           13.2               11.3 +/-    1.48      29.3 +/-    1.48  0.030 / 0.050
G20     197.3          18.9               17.8 +/-    0.93      40.3 +/-    0.93  0.040 / 0.060
G25     304.4          51.2               11.2 +/-    1.26      13.9 +/-    1.26  0.070 / 0.160
G29     302.7          24.4               10.6 +/-    0.76      20.9 +/-    0.76  0.080 / 0.160