PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-18:57:40
G02     30.5           57.4                9.4 +/-    0.83      11.0 +/-    0.83  0.020 / 0.040
G05     139.9          62.2               11.6 +/-    0.40      12.9 +/-    0.40  0.030 / 0.040
G06     54.5           13.8                8.5 +/-    3.02      21.8 +/-    3.02  0.050 / 0.050
G12     189.6          64.4               10.9 +/-    0.42      11.9 +/-    0.42  0.090 / 0.050
G19     99.0           12.5               10.2 +/-    1.31      27.0 +/-    1.31  0.030 / 0.040
G25     295.8          54.3               10.9 +/-    2.74      13.1 +/-    2.74  0.030 / 0.030
G29     306.7          26.8                9.2 +/-    2.40      17.2 +/-    2.40  0.120 / 0.290