PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-22:28:00
G02     201.3          29.3               19.6 +/-    1.98      34.8 +/-    1.98  0.130 / 0.440
G06     165.4          63.0               17.5 +/-    1.20      19.4 +/-    1.20  0.120 / 0.370
G12     304.2          10.9                0.9 +/-   27.25       2.5 +/-   27.25  0.060 / 0.110
G17     25.5           56.8               14.1 +/-    0.47      16.5 +/-    0.47  0.060 / 0.120
G19     342.9          68.7               13.8 +/-    0.63      14.7 +/-    0.63  0.050 / 0.130
G24     304.0          34.8               12.7 +/-    1.21      20.2 +/-    1.21  0.040 / 0.130
G28     96.6           34.8               15.2 +/-    0.89      24.2 +/-    0.89  0.070 / 0.140