PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-09:57:50
G08     319.5          12.4                3.2 +/-    1.15       8.4 +/-    1.15  0.070 / 0.080
G10     307.9          55.3                4.6 +/-    0.67       5.4 +/-    0.67  0.060 / 0.080
G14     211.5          18.1                4.0 +/-    2.80       9.3 +/-    2.80  0.030 / 0.040
G15     45.5           21.8                1.7 +/-    0.53       3.6 +/-    0.53  0.040 / 0.040
G20     7.8            64.6                3.8 +/-    0.41       4.2 +/-    0.41  0.040 / 0.040
G21     115.5          66.4                5.7 +/-    0.67       6.1 +/-    0.67  0.040 / 0.030
G24     88.8           28.1                4.5 +/-    0.57       8.2 +/-    0.57  0.090 / 0.140
G27     295.7          35.3                6.5 +/-    1.29      10.3 +/-    1.29  0.080 / 0.120
G32     213.8          33.8                7.8 +/-    2.50      12.6 +/-    2.50  0.130 / 0.390