PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-22:12:50
G02     36.9           52.2                9.5 +/-    0.72      11.7 +/-    0.72  0.050 / 0.040
G05     127.3          66.0               10.3 +/-    0.83      11.2 +/-    0.83  0.040 / 0.040
G06     57.1           10.8                8.1 +/-    1.49      22.2 +/-    1.49  0.040 / 0.030
G12     190.1          60.4               11.0 +/-    0.28      12.5 +/-    0.28  0.030 / 0.030
G25     288.6          56.2               12.7 +/-    1.81      14.9 +/-    1.81  0.060 / 0.120
G29     310.2          30.7               10.0 +/-    1.41      17.3 +/-    1.41  0.090 / 0.110