PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-07:57:40
G02     296.2          82.4                3.2 +/-    0.68       3.3 +/-    0.68  0.080 / 0.100
G05     168.0          24.4                4.6 +/-    2.12       9.1 +/-    2.12  0.080 / 0.130
G06     38.9           53.9                2.9 +/-    0.91       3.5 +/-    0.91  0.040 / 0.040
G12     319.8          59.3                3.4 +/-    0.67       3.9 +/-    0.67  0.040 / 0.030
G17     78.4           17.2                2.9 +/-    1.76       6.9 +/-    1.76  0.080 / 0.180
G19     66.6           32.5                2.3 +/-    2.44       3.9 +/-    2.44  0.090 / 0.100
G24     237.7          29.6                7.1 +/-    1.78      12.6 +/-    1.78  0.130 / 0.140
G25     317.8          19.7                1.9 +/-    1.61       4.2 +/-    1.61  0.160 / 0.120