PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-09:57:40
G01     65.5           31.4                3.9 +/-    0.94       6.6 +/-    0.94  0.040 / 0.050
G07     138.7          26.5                6.1 +/-    1.09      11.5 +/-    1.09  0.030 / 0.040
G11     51.9           30.4                3.9 +/-    0.79       6.9 +/-    0.79  0.060 / 0.120
G13     268.9          38.1                6.7 +/-    1.26      10.1 +/-    1.26  0.060 / 0.120
G15     299.9          15.6                0.6 +/-    2.12       1.4 +/-    2.12  0.030 / 0.040
G17     236.5          69.9                6.4 +/-    1.20       6.7 +/-    1.20  0.030 / 0.040
G18     45.9           16.3                2.0 +/-    1.53       4.8 +/-    1.53  0.060 / 0.110
G19     225.8          47.0                6.8 +/-    0.92       8.9 +/-    0.92  0.060 / 0.120
G28     10.8           60.9                2.7 +/-    0.73       3.0 +/-    0.73  0.050 / 0.070
G30     139.2          60.7                6.3 +/-    0.74       7.1 +/-    0.74  0.040 / 0.060