PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-09:43:10
G01     66.3           31.5                5.2 +/-    0.89       8.7 +/-    0.89  0.040 / 0.040
G07     138.3          27.4                7.3 +/-    1.17      13.6 +/-    1.17  0.030 / 0.040
G11     52.5           31.1                4.6 +/-    1.43       7.9 +/-    1.43  0.060 / 0.120
G13     269.9          38.3                8.1 +/-    1.29      12.1 +/-    1.29  0.060 / 0.110
G15     300.5          15.5                1.9 +/-    1.60       4.8 +/-    1.60  0.070 / 0.120
G17     235.0          69.3                6.5 +/-    1.26       6.9 +/-    1.26  0.070 / 0.110
G18     46.5           16.7                2.6 +/-    0.76       6.1 +/-    0.76  0.120 / 0.260
G19     225.1          46.3                6.1 +/-    0.74       8.0 +/-    0.74  0.120 / 0.300
G28     9.1            61.0                3.2 +/-    0.70       3.6 +/-    0.70  0.040 / 0.090
G30     138.4          61.6                8.4 +/-    1.06       9.5 +/-    1.06  0.060 / 0.090