PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-15:12:20
G02     205.0          34.2               12.7 +/-    1.26      20.5 +/-    1.26  0.140 / 0.090
G06     147.5          72.8               10.8 +/-    0.44      11.2 +/-    0.44  0.100 / 0.080
G12     310.4          21.7                9.5 +/-    1.70      20.0 +/-    1.70  0.120 / 0.130
G17     39.8           45.9                7.3 +/-    2.06       9.7 +/-    2.06  0.100 / 0.160
G19     357.5          65.4                8.8 +/-    0.39       9.5 +/-    0.39  0.040 / 0.020
G24     293.4          40.4                3.5 +/-    9.27       5.0 +/-    9.27  0.030 / 0.030
G28     104.6          29.8                7.6 +/-    0.90      13.3 +/-    0.90  0.040 / 0.030