PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/14-08:12:50
G01     320.2          15.5               -1.9 +/-   22.87      -4.8 +/-   22.87  0.140 / 0.340
G08     261.3          15.3                6.5 +/-    2.20      16.0 +/-    2.20  0.130 / 0.360
G10     74.5           54.0                3.8 +/-    0.46       4.5 +/-    0.46  0.110 / 0.270
G11     305.9          21.5                3.5 +/-    1.61       7.5 +/-    1.61  0.180 / 0.250
G14     285.7          70.2                2.8 +/-    0.73       3.0 +/-    0.73  0.040 / 0.030
G18     307.2          39.0                2.8 +/-    1.59       4.1 +/-    1.59  0.040 / 0.030
G20     102.2          31.7                4.1 +/-    1.76       6.9 +/-    1.76  0.030 / 0.020
G27     227.8          11.8                6.6 +/-    2.28      17.6 +/-    2.28  0.030 / 0.020
G31     176.7          37.7                8.1 +/-    1.09      12.3 +/-    1.09  0.040 / 0.060
G32     347.1          71.8                2.9 +/-    0.88       3.0 +/-    0.88  0.040 / 0.060