PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/03-09:27:50
G01     314.8          26.5                2.4 +/-    1.34       4.5 +/-    1.34  0.030 / 0.050
G10     93.8           46.2                4.7 +/-    0.58       6.2 +/-    0.58  0.030 / 0.040
G11     292.9          26.7                4.1 +/-    1.95       7.7 +/-    1.95  0.130 / 0.210
G14     329.8          71.0                5.0 +/-    0.92       5.3 +/-    0.92  0.080 / 0.200
G18     291.9          47.9                5.6 +/-    0.80       7.3 +/-    0.80  0.090 / 0.170
G20     113.3          21.9                5.1 +/-    1.30      10.8 +/-    1.30  0.080 / 0.170
G22     306.6          20.9                4.3 +/-    3.83       9.4 +/-    3.83  0.050 / 0.060
G25     92.4           12.3                2.6 +/-    1.79       7.0 +/-    1.79  0.040 / 0.050
G31     173.2          52.4                6.7 +/-    0.87       8.2 +/-    0.87  0.040 / 0.080
G32     15.5           63.5                3.5 +/-    0.90       3.9 +/-    0.90  0.050 / 0.070