PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-06:57:50
G08     319.0          12.8                2.3 +/-    1.81       6.2 +/-    1.81  0.030 / 0.030
G10     311.4          56.2                3.9 +/-    1.17       4.6 +/-    1.17  0.040 / 0.040
G14     212.2          19.6                2.0 +/-    5.01       4.4 +/-    5.01  0.040 / 0.040
G15     45.5           19.8                2.0 +/-    0.87       4.5 +/-    0.87  0.040 / 0.040
G20     12.0           64.2                4.6 +/-    0.51       5.1 +/-    0.51  0.050 / 0.090
G21     117.6          66.9                5.3 +/-    0.33       5.7 +/-    0.33  0.050 / 0.090
G24     87.7           28.8                3.8 +/-    0.72       6.9 +/-    0.72  0.160 / 0.360
G27     292.9          36.3                3.9 +/-    0.73       6.1 +/-    0.73  0.140 / 0.340
G32     214.8          35.5                7.8 +/-    2.44      12.2 +/-    2.44  0.080 / 0.120