PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-17:28:00
G02     200.6          17.4               13.7 +/-    1.32      32.2 +/-    1.32  0.110 / 0.170
G06     169.5          52.9               16.2 +/-    0.75      19.8 +/-    0.75  0.100 / 0.200
G13     228.6          14.5               13.9 +/-    2.81      35.1 +/-    2.81  0.090 / 0.120
G17     18.6           61.8               12.9 +/-    0.76      14.4 +/-    0.76  0.090 / 0.100
G19     306.3          70.4               13.2 +/-    0.47      13.9 +/-    0.47  0.330 / 0.460
G24     310.8          29.0               12.3 +/-    1.64      22.0 +/-    1.64  0.180 / 0.300
G28     85.5           41.0               12.6 +/-    1.37      18.0 +/-    1.37  0.040 / 0.060
G30     157.1          17.2               14.8 +/-    1.42      34.8 +/-    1.42  0.040 / 0.030