PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-00:42:50
G02     240.1          76.3               11.8 +/-    0.49      12.2 +/-    0.49  0.050 / 0.060
G05     171.1          16.2               15.2 +/-    1.61      36.6 +/-    1.61  0.050 / 0.060
G06     40.9           59.1               10.3 +/-    0.68      11.8 +/-    0.68  0.130 / 0.160
G12     321.5          50.9               11.4 +/-    1.29      14.2 +/-    1.29  0.090 / 0.120
G17     68.2           26.4               10.0 +/-    1.52      18.9 +/-    1.52  0.090 / 0.100
G19     55.4           40.1               10.9 +/-    0.67      15.8 +/-    0.67  0.100 / 0.120
G24     246.3          35.3               13.7 +/-    1.19      21.6 +/-    1.19  0.040 / 0.040
G25     316.5          10.7              -11.5 +/-   32.97     -31.5 +/-   32.97  0.030 / 0.030