PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/27-13:28:10
G01     319.6          17.0                4.9 +/-    1.68      11.7 +/-    1.68  0.130 / 0.250
G08     257.4          14.2                5.0 +/-    3.31      12.7 +/-    3.31  0.120 / 0.190
G10     77.7           53.2                4.4 +/-    0.78       5.4 +/-    0.78  0.020 / 0.020
G11     303.6          23.0                4.4 +/-    0.81       8.9 +/-    0.81  0.020 / 0.020
G14     293.8          71.0                5.2 +/-    0.55       5.4 +/-    0.55  0.050 / 0.050
G18     304.1          42.2                4.7 +/-    1.09       6.6 +/-    1.09  0.050 / 0.050
G20     104.1          30.0                4.6 +/-    1.36       8.1 +/-    1.36  0.040 / 0.030
G27     227.2          10.5                0.8 +/-   20.08       2.2 +/-   20.08  0.040 / 0.030
G31     178.8          37.6                6.4 +/-    1.72       9.7 +/-    1.72  0.060 / 0.070
G32     353.9          70.5                4.7 +/-    0.56       5.0 +/-    0.56  0.070 / 0.070