PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-04:27:10
G02     219.6          66.7                5.2 +/-    0.94       5.6 +/-    0.94  0.220 / 0.610
G06     50.7           72.8                4.3 +/-    0.78       4.4 +/-    0.78  0.060 / 0.090
G12     319.5          38.7                2.9 +/-    1.10       4.3 +/-    1.10  0.050 / 0.090
G17     60.1           31.3                3.8 +/-    0.69       6.5 +/-    0.69  0.040 / 0.020
G19     44.7           46.2                2.7 +/-    0.41       3.5 +/-    0.41  0.040 / 0.030
G24     260.7          40.3                5.6 +/-    0.92       8.1 +/-    0.92  0.040 / 0.070
G28     125.7          9.8                 6.0 +/-    2.52      16.9 +/-    2.52  0.050 / 0.090