PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-21:43:10
G02     201.2          27.6               16.5 +/-    1.39      30.4 +/-    1.39  0.070 / 0.100
G06     166.1          61.6               13.6 +/-    0.75      15.3 +/-    0.75  0.070 / 0.140
G17     24.6           57.5               11.5 +/-    1.01      13.3 +/-    1.01  0.060 / 0.090
G19     338.2          69.3               11.6 +/-    0.39      12.4 +/-    0.39  0.040 / 0.090
G24     305.1          34.0               10.4 +/-    1.98      16.7 +/-    1.98  0.030 / 0.040
G28     95.1           35.7               12.6 +/-    1.69      19.7 +/-    1.69  0.040 / 0.040