PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/15-05:12:30
G02     337.0          79.7                2.9 +/-    0.44       2.9 +/-    0.44  0.040 / 0.040
G05     165.1          31.2                6.5 +/-    0.97      11.1 +/-    0.97  0.050 / 0.040
G06     39.2           47.6                1.9 +/-    1.01       2.5 +/-    1.01  0.040 / 0.040
G12     315.5          66.2                3.3 +/-    1.06       3.5 +/-    1.06  0.030 / 0.030
G17     84.7           10.9                5.6 +/-    2.42      15.3 +/-    2.42  0.150 / 0.210
G19     71.9           29.3                3.0 +/-    1.83       5.3 +/-    1.83  0.150 / 0.250
G24     227.6          23.7                5.2 +/-    1.76      10.4 +/-    1.76  0.060 / 0.100
G25     317.0          29.6                2.7 +/-    1.69       4.8 +/-    1.69  0.060 / 0.090