PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-16:42:30
G01     43.0           18.9                9.4 +/-    3.52      21.3 +/-    3.52  0.060 / 0.100
G06     174.2          36.9               13.7 +/-    1.38      21.0 +/-    1.38  0.050 / 0.100
G13     240.5          24.3               14.7 +/-    1.36      29.2 +/-    1.36  0.220 / 0.310
G15     276.5          13.0               11.5 +/-    1.25      30.2 +/-    1.25  0.380 / 0.230
G17     352.6          73.2               12.0 +/-    0.49      12.5 +/-    0.49  0.070 / 0.110
G19     263.4          64.6               12.9 +/-    0.96      14.1 +/-    0.96  0.080 / 0.090
G24     317.2          17.4               11.5 +/-    4.32      27.0 +/-    4.32  0.090 / 0.250
G28     66.8           48.6               12.3 +/-    0.79      15.8 +/-    0.79  0.120 / 0.270
G30     153.9          31.8               12.4 +/-    1.24      21.0 +/-    1.24  0.270 / 0.320