PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-17:27:40
G02     201.1          20.9               14.0 +/-    0.96      30.1 +/-    0.96  0.180 / 0.330
G06     167.6          57.1               13.1 +/-    0.87      15.3 +/-    0.87  0.110 / 0.360
G13     225.9          12.0               11.3 +/-    2.44      30.3 +/-    2.44  0.090 / 0.160
G17     23.2           58.8               11.3 +/-    0.38      12.9 +/-    0.38  0.110 / 0.140
G19     318.5          70.3               11.2 +/-    0.62      11.8 +/-    0.62  0.080 / 0.130
G24     308.3          31.7               12.3 +/-    1.26      20.8 +/-    1.26  0.080 / 0.120
G28     89.7           38.9               12.2 +/-    0.70      18.0 +/-    0.70  0.040 / 0.100
G30     157.6          13.8               13.2 +/-    3.66      33.9 +/-    3.66  0.040 / 0.110