PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-06:27:50
G02     201.9          29.2                6.5 +/-    0.93      11.6 +/-    0.93  0.060 / 0.090
G06     168.7          62.0                6.6 +/-    0.42       7.4 +/-    0.42  0.060 / 0.080
G12     304.1          10.7               -5.5 +/-   12.39     -15.1 +/-   12.39  0.060 / 0.090
G17     33.8           50.8                3.1 +/-    0.65       3.9 +/-    0.65  0.050 / 0.130
G19     342.9          68.5                4.7 +/-    0.46       5.0 +/-    0.46  0.030 / 0.040
G24     299.7          38.5                4.4 +/-    0.82       6.6 +/-    0.82  0.030 / 0.040
G28     95.9           36.5                6.4 +/-    0.63       9.9 +/-    0.63  0.130 / 0.390