PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-05:27:30
G02     226.4          71.6                3.5 +/-    0.45       3.7 +/-    0.45  0.130 / 0.240
G05     173.8          10.8               -5.9 +/-   13.33     -16.3 +/-   13.33  0.170 / 0.360
G06     44.4           68.5                3.7 +/-    0.38       4.0 +/-    0.38  0.050 / 0.090
G12     320.5          43.3                2.6 +/-    0.49       3.7 +/-    0.49  0.040 / 0.070
G17     64.6           27.7                1.0 +/-    1.62       1.8 +/-    1.62  0.030 / 0.030
G19     50.2           42.8                2.6 +/-    1.31       3.6 +/-    1.31  0.030 / 0.030
G24     254.6          38.5                3.8 +/-    1.41       5.6 +/-    1.41  0.040 / 0.040