PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-22:57:40
G02     200.3          24.6               14.0 +/-    3.92      27.7 +/-    3.92  0.040 / 0.040
G06     169.1          57.3               13.6 +/-    0.46      15.8 +/-    0.46  0.030 / 0.040
G13     225.5          11.2               15.3 +/-    2.03      41.5 +/-    2.03  0.080 / 0.130
G17     18.7           61.0               10.6 +/-    0.56      11.9 +/-    0.56  0.090 / 0.120
G19     328.9          70.3               10.3 +/-    0.53      10.9 +/-    0.53  0.280 / 0.480
G24     308.1          31.5               10.4 +/-    1.33      17.7 +/-    1.33  0.340 / 0.570
G28     91.4           37.8               11.8 +/-    0.88      17.8 +/-    0.88  0.060 / 0.100
G30     157.0          10.7               17.2 +/-    1.79      47.3 +/-    1.79  0.070 / 0.090