PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-23:12:50
G01     68.6           32.5               10.8 +/-    1.87      18.0 +/-    1.87  0.060 / 0.140
G07     137.9          25.0                9.5 +/-    2.00      18.5 +/-    2.00  0.120 / 0.140
G11     51.5           28.6                7.8 +/-    2.03      14.1 +/-    2.03  0.040 / 0.040
G13     271.7          38.0                9.8 +/-    2.19      14.8 +/-    2.19  0.060 / 0.040
G15     300.7          15.7                6.7 +/-    1.74      16.4 +/-    1.74  0.130 / 0.090
G17     236.7          72.5               11.1 +/-    0.60      11.6 +/-    0.60  0.150 / 0.120
G18     45.4           15.3                7.5 +/-    1.23      18.5 +/-    1.23  0.070 / 0.090
G19     224.7          43.1               10.3 +/-    2.04      14.2 +/-    2.04  0.110 / 0.090
G28     15.3           60.2               10.0 +/-    1.11      11.4 +/-    1.11  0.150 / 0.320
G30     137.3          60.0               10.6 +/-    0.34      12.0 +/-    0.34  0.130 / 0.290