PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-18:58:00
G02     259.4          78.3                8.1 +/-    0.55       8.3 +/-    0.55  0.050 / 0.160
G05     169.6          21.3               11.9 +/-    0.95      25.4 +/-    0.95  0.060 / 0.150
G06     40.3           50.6                7.5 +/-    0.49       9.4 +/-    0.49  0.040 / 0.040
G12     321.8          61.8                7.8 +/-    1.15       8.7 +/-    1.15  0.030 / 0.040
G17     75.9           18.7                9.1 +/-    1.12      20.7 +/-    1.12  0.030 / 0.050
G19     60.8           37.5                9.1 +/-    0.46      13.8 +/-    0.46  0.030 / 0.030
G24     237.8          31.1               11.1 +/-    1.09      19.1 +/-    1.09  0.090 / 0.200
G25     317.5          17.7                7.9 +/-    2.95      18.4 +/-    2.95  0.090 / 0.240