PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-08:12:40
G01     71.1           32.1                2.8 +/-    0.53       4.7 +/-    0.53  0.040 / 0.040
G07     135.9          31.8                6.5 +/-    0.74      11.0 +/-    0.74  0.040 / 0.040
G11     55.8           34.5                3.1 +/-    0.72       5.0 +/-    0.72  0.060 / 0.100
G13     275.4          38.9                6.9 +/-    1.00      10.2 +/-    1.00  0.050 / 0.090
G15     303.4          15.2                1.3 +/-    4.36       3.3 +/-    4.36  0.080 / 0.110
G17     228.0          66.4                7.2 +/-    1.14       7.8 +/-    1.14  0.080 / 0.120
G19     221.7          42.5                6.5 +/-    2.61       9.1 +/-    2.61  0.080 / 0.100
G28     0.0            61.4                3.3 +/-    0.47       3.7 +/-    0.47  0.090 / 0.110
G30     133.7          66.6                6.1 +/-    0.76       6.6 +/-    0.76  0.040 / 0.060