PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/08-08:42:40
G01     70.4           32.1                4.7 +/-    1.32       7.9 +/-    1.32  0.040 / 0.040
G07     136.3          31.0                6.6 +/-    1.11      11.4 +/-    1.11  0.040 / 0.040
G11     55.2           33.9                4.7 +/-    1.31       7.7 +/-    1.31  0.110 / 0.290
G13     274.6          38.8                6.1 +/-    1.40       9.1 +/-    1.40  0.110 / 0.240
G15     303.1          15.2                2.1 +/-    1.94       5.3 +/-    1.94  0.040 / 0.060
G17     228.9          66.7                6.8 +/-    0.65       7.4 +/-    0.65  0.040 / 0.060
G19     222.2          43.0                7.2 +/-    2.33      10.0 +/-    2.33  0.030 / 0.040
G28     1.6            61.4                4.2 +/-    0.56       4.7 +/-    0.56  0.040 / 0.050
G30     134.5          65.7                7.3 +/-    0.47       7.9 +/-    0.47  0.090 / 0.120