PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-05:12:30
G02     219.5          66.7                5.8 +/-    0.68       6.2 +/-    0.68  0.060 / 0.090
G06     51.1           73.4                3.4 +/-    0.80       3.5 +/-    0.80  0.050 / 0.080
G12     319.5          38.6                2.3 +/-    1.23       3.5 +/-    1.23  0.030 / 0.030
G17     60.4           30.8                2.7 +/-    0.83       4.6 +/-    0.83  0.030 / 0.030
G19     44.9           46.0                2.4 +/-    0.57       3.1 +/-    0.57  0.060 / 0.060
G24     260.8          40.3                5.3 +/-    1.11       7.7 +/-    1.11  0.040 / 0.080