PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-20:42:30
G02     259.5          78.9                8.7 +/-    0.55       8.8 +/-    0.55  0.090 / 0.130
G05     169.4          21.1               12.0 +/-    1.22      25.7 +/-    1.22  0.080 / 0.110
G06     40.2           51.6                8.6 +/-    0.64      10.6 +/-    0.64  0.060 / 0.170
G12     321.6          59.9                8.5 +/-    0.60       9.7 +/-    0.60  0.070 / 0.160
G17     74.8           20.1                9.5 +/-    0.78      20.8 +/-    0.78  0.030 / 0.090
G19     60.6           37.4                9.8 +/-    0.81      14.9 +/-    0.81  0.030 / 0.080
G24     238.9          31.5               11.4 +/-    1.00      19.4 +/-    1.00  0.030 / 0.040
G25     317.4          16.8                8.8 +/-    3.06      21.0 +/-    3.06  0.040 / 0.040