PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-07:43:00
G02     251.9          79.6                3.5 +/-    0.46       3.5 +/-    0.46  0.120 / 0.150
G05     170.6          18.2                6.1 +/-    0.99      14.0 +/-    0.99  0.100 / 0.140
G06     39.4           60.7                3.5 +/-    0.92       3.9 +/-    0.92  0.030 / 0.040
G12     321.2          52.3                2.8 +/-    0.59       3.5 +/-    0.59  0.040 / 0.040
G17     72.9           21.2                3.7 +/-    1.40       7.9 +/-    1.40  0.060 / 0.130
G19     60.0           36.7                2.2 +/-    1.65       3.5 +/-    1.65  0.090 / 0.130
G24     244.4          33.8                7.8 +/-    2.03      12.6 +/-    2.03  0.090 / 0.090
G25     317.1          13.8                2.7 +/-    1.48       6.9 +/-    1.48  0.110 / 0.080