PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-08:12:30
G10     253.9          30.3                7.0 +/-    1.45      12.3 +/-    1.45  0.040 / 0.040
G13     50.0           27.0                4.0 +/-    2.56       7.5 +/-    2.56  0.040 / 0.040
G15     77.3           55.8                6.2 +/-    1.06       7.3 +/-    1.06  0.120 / 0.500
G16     297.8          13.5                2.2 +/-    3.01       5.7 +/-    3.01  0.090 / 0.480
G20     275.6          53.5                7.3 +/-    3.51       8.8 +/-    3.51  0.170 / 0.170
G21     345.4          64.9                5.7 +/-    0.58       6.3 +/-    0.58  0.120 / 0.200
G26     268.8          13.7                4.3 +/-    1.08      11.0 +/-    1.08  0.040 / 0.030
G29     162.1          40.2                7.5 +/-    1.14      10.8 +/-    1.14  0.030 / 0.040