PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/13-19:58:00
G01     126.0          12.6               15.8 +/-    3.95      41.6 +/-    3.95  0.050 / 0.030
G07     55.6           69.6               13.6 +/-    0.30      14.4 +/-    0.30  0.040 / 0.030
G08     51.7           42.3               11.1 +/-    1.09      15.5 +/-    1.09  0.180 / 0.180
G09     178.6          35.3               13.7 +/-    1.04      21.6 +/-    1.04  0.180 / 0.180
G11     119.0          35.7               14.8 +/-    0.98      23.2 +/-    0.98  0.110 / 0.220
G13     320.9          12.4               10.8 +/-    2.77      28.5 +/-    2.77  0.090 / 0.220
G17     201.6          12.4               20.0 +/-    3.16      53.0 +/-    3.16  0.030 / 0.020
G18     103.0          17.2               13.2 +/-    2.06      31.1 +/-    2.06  0.030 / 0.010
G28     279.1          53.9               12.4 +/-    2.50      14.9 +/-    2.50  0.040 / 0.010
G30     337.9          63.3               12.7 +/-    0.49      14.0 +/-    0.49  0.040 / 0.010