PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-16:42:20
G02     229.1          68.1                9.3 +/-    1.45      10.0 +/-    1.45  0.090 / 0.350
G05     174.3          11.3                0.0 +/-   32.26       0.0 +/-   32.26  0.090 / 0.260
G06     42.9           61.3                8.7 +/-    0.95       9.8 +/-    0.95  0.090 / 0.100
G12     322.7          51.6                7.1 +/-    1.27       8.7 +/-    1.27  0.060 / 0.110
G17     67.4           24.1                8.0 +/-    1.56      15.9 +/-    1.56  0.060 / 0.070
G19     48.3           44.9                7.7 +/-    0.37      10.4 +/-    0.37  0.040 / 0.070
G24     248.9          37.5                9.9 +/-    1.70      15.0 +/-    1.70  0.030 / 0.050