PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-21:42:40
G02     23.6           62.8                9.3 +/-    1.12      10.4 +/-    1.12  0.040 / 0.050
G05     149.7          54.8               10.8 +/-    0.62      12.9 +/-    0.62  0.040 / 0.050
G06     50.0           20.9                6.7 +/-    1.28      14.5 +/-    1.28  0.030 / 0.030
G12     206.9          75.0                9.9 +/-    1.30      10.2 +/-    1.30  0.030 / 0.040
G19     92.4           16.9                9.0 +/-    1.54      21.4 +/-    1.54  0.040 / 0.060
G25     306.9          47.5                9.8 +/-    0.90      12.7 +/-    0.90  0.040 / 0.050
G29     300.9          21.0                9.8 +/-    1.54      21.1 +/-    1.54  0.060 / 0.090