PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-18:28:00
G02     204.9          37.2               12.3 +/-    1.03      18.8 +/-    1.03  0.150 / 0.250
G06     146.9          73.7               11.0 +/-    0.74      11.4 +/-    0.74  0.220 / 0.240
G12     310.4          20.7                7.8 +/-    2.55      16.9 +/-    2.55  0.030 / 0.030
G17     38.9           47.0               10.1 +/-    1.43      13.2 +/-    1.43  0.030 / 0.020
G19     2.8            64.3               10.0 +/-    0.37      11.0 +/-    0.37  0.060 / 0.080
G24     292.6          40.4               13.2 +/-    9.23      19.0 +/-    9.23  0.060 / 0.090
G28     106.0          28.8               11.3 +/-    1.07      20.4 +/-    1.07  0.040 / 0.040