PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-22:13:10
G02     68.5           26.2                7.9 +/-    0.72      15.0 +/-    0.72  0.030 / 0.040
G05     47.6           50.0                8.3 +/-    0.78      10.4 +/-    0.78  0.050 / 0.050
G12     180.2          18.1               12.6 +/-    1.18      29.1 +/-    1.18  0.090 / 0.160
G13     118.0          23.1               11.5 +/-    0.91      23.5 +/-    0.91  0.220 / 0.180
G15     159.3          20.8               15.3 +/-    1.48      33.1 +/-    1.48  0.110 / 0.130
G21     280.7          23.7               11.0 +/-    2.01      22.1 +/-    2.01  0.090 / 0.190
G25     221.9          42.2               11.2 +/-    2.12      15.7 +/-    2.12  0.080 / 0.090
G26     318.8          11.1              -10.7 +/-   33.63     -29.3 +/-   33.63  0.070 / 0.080
G29     335.1          65.2               10.8 +/-    0.36      11.8 +/-    0.36  0.060 / 0.170