PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-06:58:10
G02     206.5          43.6                7.7 +/-    1.51      10.5 +/-    1.51  0.050 / 0.060
G06     146.3          76.5                6.6 +/-    1.51       6.8 +/-    1.51  0.050 / 0.070
G12     311.6          21.4                3.5 +/-    3.79       7.5 +/-    3.79  0.080 / 0.210
G17     45.8           40.5                2.8 +/-    0.67       4.1 +/-    0.67  0.110 / 0.170
G19     13.8           60.9                4.1 +/-    1.11       4.7 +/-    1.11  0.030 / 0.020
G24     282.3          43.6                3.7 +/-    0.67       5.1 +/-    0.67  0.030 / 0.020
G28     109.5          27.2                7.5 +/-    1.58      13.9 +/-    1.58  0.240 / 0.220