PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-09:27:50
G01     306.7          34.3                4.5 +/-    1.26       7.2 +/-    1.26  0.070 / 0.120
G10     106.5          38.5                5.7 +/-    0.68       8.5 +/-    0.68  0.070 / 0.130
G11     280.6          27.9                2.9 +/-    1.04       5.3 +/-    1.04  0.050 / 0.050
G14     359.0          66.8                3.5 +/-    0.84       3.8 +/-    0.84  0.050 / 0.050
G18     274.2          50.8                5.1 +/-    1.39       6.4 +/-    1.39  0.200 / 0.370
G20     120.8          13.7                5.2 +/-    1.81      13.3 +/-    1.81  0.200 / 0.370
G22     310.9          29.3                2.5 +/-    0.87       4.5 +/-    0.87  0.040 / 0.060
G25     81.8           16.2                3.5 +/-    1.83       8.3 +/-    1.83  0.040 / 0.050
G31     166.0          65.1                6.9 +/-    1.40       7.5 +/-    1.40  0.080 / 0.240
G32     31.5           55.6                3.0 +/-    0.34       3.5 +/-    0.34  0.120 / 0.250