PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-21:12:50
G01     120.1          16.6               13.4 +/-    1.22      32.1 +/-    1.22  0.030 / 0.030
G07     84.7           63.3               14.0 +/-    0.29      15.5 +/-    0.29  0.030 / 0.040
G08     45.1           31.3               11.6 +/-    0.80      19.8 +/-    0.80  0.100 / 0.240
G09     177.5          28.5               14.7 +/-    1.09      26.6 +/-    1.09  0.120 / 0.210
G11     106.8          39.8               14.9 +/-    1.42      21.7 +/-    1.42  0.130 / 0.220
G13     318.1          18.8               10.4 +/-    1.50      23.5 +/-    1.50  0.100 / 0.280
G17     200.3          24.3               13.0 +/-    3.65      25.8 +/-    3.65  0.040 / 0.080
G18     92.7           20.0               13.2 +/-    2.32      29.1 +/-    2.32  0.050 / 0.090
G28     284.3          54.2               13.1 +/-    2.49      15.7 +/-    2.49  0.040 / 0.030
G30     344.5          67.7               13.9 +/-    0.60      14.9 +/-    0.60  0.040 / 0.030