PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-11:57:50
G02     200.8          18.0                3.7 +/-    2.46       8.5 +/-    2.46  0.040 / 0.090
G06     169.0          53.7                7.0 +/-    0.95       8.5 +/-    0.95  0.050 / 0.080
G13     226.3          13.9                4.2 +/-    1.90      10.8 +/-    1.90  0.040 / 0.040
G17     17.7           62.1                5.8 +/-    0.62       6.5 +/-    0.62  0.050 / 0.040
G19     326.3          71.6                6.0 +/-    0.49       6.2 +/-    0.49  0.030 / 0.030
G24     310.8          27.9                4.6 +/-    1.23       8.5 +/-    1.23  0.030 / 0.040
G28     81.5           45.9                3.2 +/-    1.64       4.2 +/-    1.64  0.140 / 0.470
G30     157.5          16.5                5.2 +/-    1.68      12.6 +/-    1.68  0.140 / 0.580