PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/06-01:27:50
G01     71.1           32.8                4.8 +/-    1.33       7.9 +/-    1.33  0.100 / 0.240
G07     136.9          27.8                7.1 +/-    1.33      13.1 +/-    1.33  0.150 / 0.280
G11     52.7           29.8                5.2 +/-    1.59       9.1 +/-    1.59  0.080 / 0.080
G13     274.3          38.2                5.4 +/-    1.76       8.2 +/-    1.76  0.040 / 0.080
G15     302.9          15.1                1.4 +/-    2.15       3.4 +/-    2.15  0.080 / 0.090
G17     232.9          71.4                7.3 +/-    0.58       7.6 +/-    0.58  0.060 / 0.140
G18     46.2           15.6                3.9 +/-    3.12       9.4 +/-    3.12  0.040 / 0.050
G19     223.3          40.6                6.9 +/-    2.30      10.0 +/-    2.30  0.030 / 0.040
G28     12.8           60.4                4.3 +/-    1.06       4.9 +/-    1.06  0.090 / 0.050
G30     135.2          62.8                7.1 +/-    0.84       7.9 +/-    0.84  0.100 / 0.070