PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-22:27:50
G01     68.5           32.4               10.6 +/-    1.90      17.7 +/-    1.90  0.090 / 0.170
G07     137.9          24.6               11.0 +/-    1.88      21.7 +/-    1.88  0.080 / 0.150
G11     51.5           28.7                7.7 +/-    2.16      13.8 +/-    2.16  0.050 / 0.040
G13     271.6          38.0               10.6 +/-    2.15      15.9 +/-    2.15  0.060 / 0.040
G15     300.5          15.8                7.4 +/-    1.01      18.0 +/-    1.01  0.130 / 0.100
G17     236.5          72.2               11.6 +/-    0.42      12.1 +/-    0.42  0.120 / 0.110
G18     45.6           15.5                7.7 +/-    1.53      18.9 +/-    1.53  0.060 / 0.110
G19     224.7          43.3               12.0 +/-    2.12      16.5 +/-    2.12  0.060 / 0.120
G28     14.9           60.3                9.6 +/-    1.46      10.9 +/-    1.46  0.030 / 0.040
G30     137.3          59.6               11.4 +/-    0.31      13.0 +/-    0.31  0.030 / 0.030