PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-20:57:20
G02     28.8           58.8               10.5 +/-    0.46      12.1 +/-    0.46  0.030 / 0.040
G05     143.3          59.8               13.3 +/-    0.95      15.1 +/-    0.95  0.030 / 0.040
G06     52.8           16.4                8.1 +/-    0.64      19.5 +/-    0.64  0.030 / 0.040
G12     195.2          68.8               11.3 +/-    0.77      12.0 +/-    0.77  0.030 / 0.040
G19     96.8           13.8               11.4 +/-    1.84      29.2 +/-    1.84  0.040 / 0.060
G25     300.6          51.9               10.9 +/-    1.41      13.5 +/-    1.41  0.040 / 0.050
G29     304.7          24.8               12.7 +/-    1.48      24.9 +/-    1.48  0.050 / 0.050