PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-21:57:50
G02     210.6          52.9               16.1 +/-    0.73      19.6 +/-    0.73  0.060 / 0.130
G06     84.6           78.5               13.7 +/-    0.29      13.9 +/-    0.29  0.070 / 0.110
G12     316.2          30.2               12.8 +/-    1.14      22.2 +/-    1.14  0.070 / 0.080
G17     49.3           39.4               11.6 +/-    0.94      17.1 +/-    0.94  0.060 / 0.080
G19     27.8           55.3               12.3 +/-    0.78      14.6 +/-    0.78  0.050 / 0.060
G24     275.3          42.6               12.7 +/-    0.96      17.7 +/-    0.96  0.040 / 0.060
G28     117.5          19.0               15.0 +/-    1.15      33.8 +/-    1.15  0.030 / 0.030