PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-12:57:40
G02     203.9          31.7                5.9 +/-    1.14      10.0 +/-    1.14  0.090 / 0.090
G06     156.8          69.1                4.5 +/-    0.87       4.8 +/-    0.87  0.080 / 0.100
G12     306.8          15.4                1.4 +/-    3.09       3.5 +/-    3.09  0.050 / 0.110
G17     32.9           51.5                2.7 +/-    0.51       3.4 +/-    0.51  0.050 / 0.120
G19     4.4            64.7                2.8 +/-    0.43       3.1 +/-    0.43  0.030 / 0.050
G24     299.1          36.8                5.4 +/-    1.03       8.2 +/-    1.03  0.030 / 0.040
G28     98.1           37.5                5.3 +/-    0.73       8.0 +/-    0.73  0.040 / 0.040