PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/28-13:57:40
G01     312.7          28.8                3.7 +/-    1.41       6.6 +/-    1.41  0.150 / 0.100
G10     98.1           44.0                6.1 +/-    0.72       8.4 +/-    0.72  0.100 / 0.110
G11     288.5          27.8                3.6 +/-    1.75       6.7 +/-    1.75  0.040 / 0.040
G14     341.5          69.8                2.6 +/-    0.59       2.8 +/-    0.59  0.030 / 0.040
G18     284.6          50.3               10.4 +/-    1.30      13.1 +/-    1.30  0.040 / 0.040
G20     115.8          19.2                6.5 +/-    1.55      14.6 +/-    1.55  0.060 / 0.040
G22     307.8          22.5                3.4 +/-    1.45       7.1 +/-    1.45  0.030 / 0.020
G25     86.9           13.6                5.4 +/-    3.62      14.0 +/-    3.62  0.030 / 0.020
G31     175.1          54.3                7.7 +/-    0.76       9.3 +/-    0.76  0.080 / 0.160
G32     22.3           60.5                3.9 +/-    0.94       4.4 +/-    0.94  0.080 / 0.130